Traffic rulesThailand
Traffic rules
Thailand
1. Thailand
Thailand lies at the centre of mainland Southeast Asia, extending from the mountainous north through the central plains to the Malay Peninsula. Traffic drives on the left. Driving conditions range from heavily congested streets in Bangkok to long intercity highways and winding roads through northern and western mountain regions. The southwest monsoon is also an important factor: heavy rain can cause flash flooding and landslides, particularly near foothills and in low-lying areas.
Thailand combines ordinary highways with controlled-access motorways and an extensive network of tolled expressways around Bangkok. There is no nationwide vignette; payment systems include Easy Pass and the expanding M-Flow electronic toll system. Speed limits depend on the road and vehicle type, and Bangkok now has a 60 km/h limit on most roads, with specified exceptions. Major direction signs commonly use Thai and English, and foreign visitors generally need a valid International Driving Permit unless their licence is covered by ASEAN recognition arrangements.
AI-generated by Rijbewijs-online.be • WCIT • CC BY-SA
Are motorcycle helmets compulsory in Thailand?
Yes. Both the motorcycle rider and passenger must wear a protective helmet. Wear it correctly and fasten it securely before setting off.
🔗 tatnews.org • Tourism Authority of Thailand, driving guidelines
Which driving documents can foreign visitors use in Thailand?
The Tourism Authority identifies a Thai licence, a recognised International Driving Permit, or a licence from an ASEAN member country as accepted options. Carry the underlying national licence with an IDP, and make sure the documents cover the vehicle you intend to drive.
🔗 tatnews.org • Tourism Authority of Thailand, driving guidelines
2. Speed limit
A speed limit is the maximum legal speed permitted on a road, lane or within a designated area. It may be established by general traffic law or indicated by fixed, variable or temporary traffic signs.
A speed limit is a maximum, not a target speed. Drivers must travel more slowly whenever traffic, visibility, weather, road conditions, vulnerable road users or the condition of the vehicle make the maximum permitted speed unsafe.
Wikimedia.org • Thaweesak Churasri • CC BY
Which general speed limits should car drivers know in Thailand?
For an ordinary car, the national framework generally allows 80 km/h in specified urban areas and 90 km/h elsewhere, with separate categories and regulations for divided roads, expressways and motorways. Selected qualifying highways permit up to 120 km/h. Local rules can be substantially lower, including Bangkok’s general 60 km/h restriction with specified road exceptions. Follow the applicable signs and local conditions.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
Start of a speed limit.
English • Traffic sign บ.32 • Speed limit: 50 km/h. Do not exceed 50 km/h and use a speed safe for road and traffic conditions.
ไทย • บ.32 • จำกัดความเร็ว 50 กม./ชม.. ห้ามขับรถด้วยความเร็วเกิน 50 กิโลเมตรต่อชั่วโมง และต้องใช้ความเร็วที่ปลอดภัยตามสภาพทางและการจราจร
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 69
SVG source: Commons.wikimedia.org • Original SVG
Government of Thailand • Public domain • Original revision 2017-11-10. Wikimedia original unmodified.
Artwork reviewed against the Thai Department of Highways 2018 catalogue: Doh.go.th • PDF page 69. Catalogue-equivalent illustration; intentional update from the previous PNG. The catalogue depicts a variable speed value; the existing 50 km/h value is retained.
Does every divided Thai highway allow 120 km/h?
No. The 120 km/h arrangement applies only to qualifying, designated national or rural highway sections with at least two lanes in the same direction, a barrier median and no at-grade U-turn points. The competent highway director must designate the section. A central reservation or two lanes alone is insufficient. Follow the vehicle-category rules and applicable lower signs.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
3. Minimum speed
A minimum speed is the lowest speed that vehicles are required to maintain on a particular road or under specified conditions. Minimum-speed rules are intended to prevent vehicles travelling unnecessarily slowly from disrupting traffic or creating large speed differences between road users.
A minimum speed does not require drivers to maintain that speed when traffic, weather, visibility, road conditions or safety require them to slow down. The way minimum speeds are indicated and enforced varies between countries.
Wikimedia.org • CEphoto, Uwe Aranas • CC BY-SA
Is 100 km/h the minimum on every Thai highway?
No. The 100 km/h minimum for ordinary cars in the rightmost lane belongs to qualifying, designated highways allowing 120 km/h. Exceptions apply where traffic, visibility, an obstruction or another difficulty makes that speed impracticable. It is not a blanket minimum for every highway, motorway or lane; lower signs and safe-driving requirements still apply.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
Start of a minimum speed.
English • Traffic sign บ.54 • Minimum speed: 30 km/h. Sets a 30 km/h minimum on the controlled lane or section. Take traffic conditions and safety into account.
ไทย • บ.54 • ความเร็วขั้นต่ำ 30 กม./ชม.. ป้ายนี้กำหนดความเร็วไม่ต่ำกว่า 30 กิโลเมตรต่อชั่วโมงในช่องทางหรือช่วงทางที่ควบคุม ให้คำนึงถึงสภาพการจราจรและความปลอดภัยด้วย
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 85
SVG source: Government of Thailand • Public domain • Original revision 2017-11-12. Wikimedia original unmodified.
4. Advisory speed
An advisory speed is a recommended speed for a particular road section or hazard rather than a legally imposed maximum speed. It may be shown near bends, junctions, steep gradients, roadworks or other locations where a lower speed can help drivers negotiate the road safely.
Drivers should treat an advisory speed as guidance for safe driving conditions and should travel even more slowly when weather, visibility, traffic or road conditions require it. A separate legally binding speed limit must still be obeyed.
Wikimedia.org • CEphoto, Uwe Aranas • CC BY-SA
Is Thailand’s designated 120 km/h highway arrangement advisory?
No. The qualifying designated-highway arrangement establishes restrictions for particular vehicle classes and lanes, including a maximum for ordinary cars. Do not confuse it with recommended-speed guidance or apply it to every divided highway.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
Can a speed recommendation override a lower restriction in Thailand?
No. A recommendation must be read within the applicable legal maximum. Lower signed, vehicle-specific or temporary restrictions still govern. Use the rule for the actual road and vehicle rather than treating a recommended number as permission to exceed it.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
May I drive below a recommended speed when conditions worsen in Thailand?
Yes. A recommendation is not a guarantee that the speed is safe for your vehicle or the conditions. Slow for limited visibility, poor grip, traffic or another hazard, and keep enough space to stop safely. Apply any specific legal minimum together with its traffic and safety exceptions.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
5. Slope
A slope is a section of road that rises or descends noticeably. A steep slope can affect vehicle speed, braking distance, traction, visibility and the ability of heavy or low-powered vehicles to maintain a steady speed.
Warning signs may indicate a steep ascent or dangerous descent and may show the gradient as a percentage. Drivers should adjust their speed early, select a suitable gear and remain prepared for slow vehicles, bends and changing road conditions.
Wikimedia.org • CEphoto, Uwe Aranas • CC BY-SA
What does a steep-slope warning mean in Thailand?
On a Thai slope, control speed for the gradient, surface and visibility and obey the actual warning and restriction signs. Allow extra room for vehicles that may slow on the climb.
Warning for a steep descent.
English • Traffic sign Sign family ต.34 • Steep descent. Reduce speed, use a suitable gear and maintain control. The image gives no gradient percentage. The meaning is confirmed at sign-family level; this drawing does not match every part of the verifiable standard design.
ไทย • กลุ่ม ต.34 • ทางลงลาดชัน. ข้างหน้าเป็นทางลงลาดชัน ให้ลดความเร็ว ใช้เกียร์ที่เหมาะสม และรักษาการควบคุมรถ ภาพนี้ไม่ได้ระบุค่าความลาดชันเป็นร้อยละ ยืนยันความหมายในระดับกลุ่มป้าย รูปแบบภาพนี้ยังไม่ตรงกับแบบมาตรฐานที่ตรวจสอบได้ทุกส่วน
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 101
Image via Commons.wikimedia.org
Gobierno de Colombia • Public domain • Source revision 2017-09-12. Wikimedia original unmodified.
How should I approach a steep descent in Thailand?
Reduce speed before the descent and select a suitable gear to help control the vehicle. Keep enough following distance and avoid building up speed that requires continuous heavy braking. A warning gives no fixed safe descent speed: the gradient, surface, visibility, load and vehicle can require a speed well below the legal maximum.
What should I check when meeting or overtaking on a slope in Thailand?
Do not overtake into a section hidden by a hill crest. Read any separate priority controls and use a safe passing place when the road is too narrow to meet comfortably.
6. Stop sign
A stop sign requires drivers to bring their vehicle to a complete stop and give way before entering or crossing the road ahead. The stop must be made at the stop line or another legally prescribed position.
After stopping, the driver may continue only when this can be done safely and without interfering with traffic that has priority. The sign does not create priority for the driver who has stopped.
Wikimedia.org • Millevache • CC BY-SA
Must I stop completely at a stop sign in Thailand?
Yes. Come to a complete stop when the applicable stop sign controls your approach, even when you cannot see another road user. Slowing to a crawl is not a stop. The Thai word หยุด means stop.
Stop and give way.
English • Traffic sign บ.1 • Stop. Stop completely before the junction or stop line. Let vehicles and pedestrians with priority pass, then proceed when safe.
ไทย • บ.1 • หยุด. หยุดรถให้สนิทก่อนถึงทางแยกหรือเส้นหยุด ให้รถและคนเดินเท้าที่มีสิทธิผ่านไปก่อน แล้วจึงเคลื่อนรถเมื่อปลอดภัย
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 55
Image via Commons.wikimedia.org
Government of Thailand • Public domain • Source revision 2025-04-16. Wikimedia original unmodified.
Where must I stop at a stop-controlled junction in Thailand?
Obey the stop line or prescribed stopping position and come to a complete stop before entering the conflicting route. A restricted view is a reason for further careful observation, not permission to move into another road user’s path.
Does stopping first give me priority at a stop sign in Thailand?
A complete stop does not, by itself, give you priority. Give way to the road users entitled to pass under the junction’s signs and rules, check pedestrians and cyclists, and proceed only when the gap is safe. Do not follow another stopped vehicle through without satisfying your own stopping and yielding duties.
7. School area
A school area is a road or group of roads near a school where large numbers of children may walk, cycle, cross the road or enter and leave vehicles. It may be identified by warning signs, zone signs, road markings, traffic-calming measures or flashing lights.
Special speed limits, parking restrictions or access rules may apply permanently or only during school arrival and departure times. Drivers should reduce speed, watch carefully for children and be prepared to stop.
Wikimedia.org • CEphoto, Uwe Aranas • CC BY-SA
What speed rules apply around schools in Thailand?
Follow the applicable local speed limit and traffic signs, and reduce speed for children, crossings and hazards. The national community-area framework does not establish one numerical limit for every school approach. Bangkok and other local authorities can impose lower limits.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 network.doh.go.th • DOH — full 2021 designated-highway speed Regulation
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
Does a school warning sign in Thailand automatically set the speed limit?
A children or school warning alerts you to a potential hazard; the enforceable numerical speed limit depends on the applicable law, regulatory signs and any time or variable display. Slow further if children are near the road.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 network.doh.go.th • DOH — full 2021 designated-highway speed Regulation
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
How should you pass a school entrance in Thailand?
Watch for children stepping out from between parked vehicles, obey crossings and any school patrol, and follow stopping or parking restrictions. Do not obstruct visibility near a crossing or school entrance; approach at a speed that permits a safe stop.
🔗 infocenter.oic.go.th • OIC official summary — 2021 speed frameworks and vehicle/road categories
🔗 upload.wikimedia.org • Royal Gazette facsimile of full 2021 general speed Regulation, mirrored PDF
🔗 network.doh.go.th • DOH — full 2021 designated-highway speed Regulation
🔗 ratchakitcha.soc.go.th • Royal Gazette — full December 2024 Bangkok speed and horn order
8. Crossing animals
An animals-crossing warning indicates a place or road section where wild animals, livestock or ridden animals may enter or cross the road. Animals may appear suddenly, move unpredictably or be difficult to see in darkness, vegetation or poor weather.
Drivers should reduce speed, scan both sides of the road and remain prepared to stop. The warning sign does not itself give animals priority or impose a numerical speed limit, but drivers must avoid frightening, endangering or colliding with them.
Wikimedia.org • Millevache • CC BY-SA
Which animals might drivers encounter on roads in Thailand?
Animal warnings identify a risk of animals on or beside the road. Watch for actual movement and reduce speed enough to respond safely. A warning does not guarantee that animals stay within a short signed section or establish a new numerical speed limit.
Does an animal-crossing warning sign in Thailand set a new speed limit?
A warning of animals is not, by itself, a numerical speed-limit sign. Continue to obey the applicable speed limit, but slow down whenever animals could enter the road or visibility is poor. A separate regulatory speed sign must also be obeyed.
Warning for cattle on the road.
English • Traffic sign ต.58 • Domestic animals. Animals may enter or cross the road. Reduce speed and prepare to stop if necessary.
ไทย • ต.58 • ระวังสัตว์เลี้ยง. ข้างหน้าอาจมีสัตว์เลี้ยงเดินขึ้นมาบนทางหรือข้ามทาง ให้ลดความเร็วและเตรียมหยุดหากจำเป็น
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 114
SVG source: Government of Thailand • Public domain • Original revision 2018-01-04. Wikimedia original unmodified.
Warning for crossing deer.
English • Traffic sign ต.58 • wild-animal symbol • Wild animals. The animals shown may enter or cross the road. Reduce speed and take care.
ไทย • ต.58 • รูปสัตว์ป่า • ระวังสัตว์ป่า. ข้างหน้าอาจมีสัตว์ป่าตามรูปในป้ายเดินออกมาบนทางหรือข้ามทาง ให้ลดความเร็วและระมัดระวัง
Sources
What should you do if an animal enters the road in Thailand?
Ease off the accelerator, assess the traffic behind and brake smoothly if necessary. Avoid abrupt swerving into opposing traffic or off the road. Give farm animals and ridden animals room, avoid frightening them with unnecessary horn use, and be alert for more animals following.
9. Curve
A curve is a section of road that changes direction to the left or right. A sharp, unexpected or poorly visible curve can reduce a driver’s view of approaching traffic, stopped vehicles, pedestrians and other hazards.
Drivers should reduce speed before entering the curve, remain within their lane and use smooth steering, braking and acceleration. Warning signs may indicate the direction of the first curve or a series of successive curves.
Wikimedia.org • พลพระ โกวิทวัฒน์ • CC BY-SA
What makes a bend dangerous in Thailand?
A bend limits the view ahead and can reduce the room available to correct an error. Slow before entering, allowing for the radius, surface, visibility and other road users. A safe speed can be below the posted maximum; do not overtake into an unseen section.
How should you approach a sharp curve in Thailand?
Reduce speed before the bend and keep control of the vehicle. Section 69 of the Road Traffic Act requires slowing safely on curves and in specified hazardous conditions. Obey the signs and allow for traffic, grip and visibility.
Warning for a curve to the left.
English • Traffic sign ต.1 • Left-hand bend. Reduce speed before entering and keep carefully to the left.
ไทย • ต.1 • ทางโค้งซ้าย. ข้างหน้ามีทางโค้งไปทางซ้าย ให้ลดความเร็วก่อนเข้าโค้งและขับชิดด้านซ้ายอย่างระมัดระวัง
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 90
SVG source: Government of Thailand • Public domain • Original revision 2017-12-16. Wikimedia original unmodified.
Warning for a curve to the right.
English • Traffic sign ต.2 • Right-hand bend. Reduce speed before entering and keep carefully to the left.
ไทย • ต.2 • ทางโค้งขวา. ข้างหน้ามีทางโค้งไปทางขวา ให้ลดความเร็วก่อนเข้าโค้งและขับชิดด้านซ้ายอย่างระมัดระวัง
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 1 • หน้า PDF 90
SVG source: Government of Thailand • Public domain • Original revision 2017-12-16. Wikimedia original unmodified.
Is overtaking safe on a blind bend in Thailand?
No. Do not start overtaking where your view of oncoming traffic is obstructed or where signs or road markings prohibit it. Wait until there is a lawful, clear and sufficiently long view ahead.
10. Roadworks
Roadworks are construction, maintenance, repair or inspection activities carried out on or beside a road. They may temporarily change the road layout, lane widths, speed limits, priority, permitted directions and facilities for pedestrians or cyclists.
Drivers must follow the temporary signs, traffic lights, barriers, road markings and instructions from authorised personnel. They should reduce speed, increase their following distance and remain prepared for narrow lanes, stopped traffic, workers, machinery and sudden changes in the route.
Wikimedia.org • CEphoto, Uwe Aranas • CC BY-SA
What should you watch for when approaching roadworks in Thailand?
Look for temporary warnings, cones, barriers, narrow lanes and construction vehicles. Road layouts can change temporarily, including lane shifts, traffic-light control and short one-way sections. Expect workers and slow or stationary traffic near the worksite.
Is a temporary speed limit at roadworks binding in Thailand?
Where an authorised temporary regulatory speed limit is in force, you must obey it. A roadworks warning alone should not be mistaken for a new numerical limit, but conditions may require driving more slowly.
What if only one lane remains open through roadworks in Thailand?
Follow the temporary signals, stop/go instructions, lane arrows and priority signs. Do not enter an opposing traffic lane until permitted, and give vulnerable road users and road workers extra room.
Warning for roadworks.
English • Traffic sign ตก.3 • Workers ahead. Workers may be on or near the carriageway. Reduce speed and watch for people, equipment and temporary instructions.
ไทย • ตก.3 • คนทำงาน. ข้างหน้ามีคนทำงานบนผิวจราจรหรือใกล้ผิวจราจร ให้ลดความเร็วและระวังคนงาน เครื่องมือ และคำสั่งชั่วคราว
Sources
🔗 Commons.wikimedia.org
🔗 Doh.go.th • กรมทางหลวง • คู่มือ พ.ศ. 2561 • เล่ม 3 • หน้า PDF 49
SVG source: Government of Thailand • Public domain • Original revision 2018-01-27. Wikimedia original unmodified.
11. Traffic lights
Traffic lights use coloured lights, arrows or symbols to regulate when road users may proceed, must prepare to stop or must remain stopped. Separate signals may apply to particular directions, lanes, pedestrians, cyclists or public-transport vehicles.
A green light permits movement only when the route is clear and the movement is otherwise legal. Road users must still follow priority rules, turning restrictions, lane markings and instructions from authorised traffic controllers.
Wikimedia.org • Mattes • CC BY-SA
12. Left-hand traffic
Left-hand traffic is a traffic system in which vehicles normally travel on the left side of the road. In countries using left-hand traffic, vehicles usually overtake on the right and most cars have the steering wheel on the right-hand side.
Drivers who are unfamiliar with left-hand traffic should pay particular attention at intersections, roundabouts, when turning and when entering or leaving roads, because familiar traffic movements are reversed compared with right-hand traffic.
Wikimedia.org • Mattes • CC0
Does traffic normally drive on the left in Thailand?
Yes. Traffic in Thailand normally keeps to the left on two-way roads. Drivers should take special care when arriving from a country that normally keeps right.
On which side is overtaking normally carried out in Thailand?
With ordinary left-hand traffic, overtaking is normally on the right. Exceptions can exist under local law, such as particular lane, turning or traffic conditions. Follow the local rules and never assume an unsafe pass is permitted.
What should visitors check when adapting to the driving side in Thailand?
Stay on the left after a turn, look carefully in both directions at crossings and roundabouts, and allow extra room when driving a vehicle with the steering wheel on the unfamiliar side. Observe lane arrows and signs.
13. Driving licence
A driving licence is an official document authorising a person to drive one or more specified categories of motor vehicle. It may contain conditions, restrictions, category codes and expiry dates that determine which vehicles the holder may drive.
Drivers must hold a licence that is valid for the vehicle category and jurisdiction concerned. A licence may be provisional, full, restricted, suspended or withdrawn, and additional qualifications may be required for professional driving.
Wikimedia.org • CC0
Which driving-licence entitlement is needed for an ordinary car in Thailand?
You need a valid licence for the particular vehicle category. Check the local vehicle-category table and any conditions on your document; permission to ride a motorcycle or drive a small vehicle does not automatically authorise driving an ordinary car.
Can a visitor drive in Thailand using a driving licence issued abroad?
Check the requirements for your licence and visit. For example, UK Government guidance says UK licence holders must carry both their UK driving licence and a 1968 International Driving Permit when driving in Thailand. Holders of other licences should confirm the applicable requirements before driving.
Does an International Driving Permit replace the original licence in Thailand?
No. An International Driving Permit accompanies the underlying valid driving licence; it does not replace it. Carry both when using an IDP, and check which permit or translation is accepted for your licence and visit.
🔗 gov.uk • UK Government, IDPs and underlying driving licences
14. Reversing
Reversing means driving a vehicle backwards. It is commonly used when parking, leaving a confined space or repositioning a vehicle where forward movement is not practical.
Before reversing, the driver should check mirrors and blind spots, look carefully around the vehicle and make sure the area behind is clear. Reversing should be performed slowly and only for as long as necessary because visibility behind the vehicle is often limited.
Wikimedia.org • Kārlis Dambrāns • CC BY
What should you check before reversing?
Check behind and around the vehicle for pedestrians, cyclists, other vehicles and obstacles. Use mirrors and cameras where available, but also look directly because monitoring systems can have blind spots.
🔗 gov.uk • Great Britain Highway Code, Rules 200–203; national guidance example
Should you reverse for a long distance?
No. Reversing should normally be limited to the distance necessary to complete the manoeuvre safely. Driving forward generally provides better visibility and vehicle control.
🔗 gov.uk • Great Britain Highway Code, Rules 200–203; national guidance example
15. Uncontrolled crossroad
An uncontrolled crossroad is an intersection where traffic priority is not specifically regulated by traffic lights, an authorised person or signs assigning priority to particular approaches. Drivers must therefore determine who has priority using the default traffic rules that apply in that country.
The applicable rule varies between countries and may include priority from the right, priority from the left or another default right-of-way rule. Drivers should approach an uncontrolled crossroad carefully, observe traffic from every direction and never assume that a wider or busier road automatically has priority.
Wikimedia.org • Xufanc • CC BY-SA
What is an uncontrolled crossroad?
An uncontrolled crossroad is an intersection where priority is not specifically assigned by traffic lights, an authorised person or priority signs. Drivers must use the default priority rules of the country.
Who has priority at an uncontrolled crossroad?
This depends on the local traffic law. Some countries use priority from the right, while others use different rules. Drivers should know the default intersection rule of the country in which they are driving.
What should you do if you are unsure who has priority?
Reduce speed and be prepared to stop. Never force your way through an intersection simply because the priority situation is unclear.
16. Licence plate
A licence plate, also called a registration plate or number plate, is a plate displaying a unique registration identifier assigned to a vehicle by the competent registration authority. It allows the vehicle to be identified for purposes such as registration, traffic enforcement, taxation, insurance and parking control.
The appearance, format, placement and number of plates required vary between countries and vehicle categories. Drivers must ensure that required licence plates are correctly fitted, clearly visible and legible and must follow the local rules when a plate is lost, stolen, damaged or replaced.
Wikimedia.org • 19petra • CC BY-SA
What is a licence plate?
A licence plate is a plate displaying the registration identifier assigned to a vehicle. It allows authorities and other authorised systems to identify the vehicle's registration.
Is a licence plate the same as a registration plate?
Yes. Licence plate, registration plate and number plate are different terms commonly used for the plate displaying a vehicle's official registration number.
What should you do if a licence plate is lost or stolen?
Follow the local reporting and replacement procedure. For example, UK guidance says stolen plates should be reported to the police and DVLA, and replacement plates are needed before driving. Check the registration authority’s procedure for a lost plate; it may differ from the theft process.
17. Bus
A bus is a motor vehicle designed to transport multiple passengers, usually along roads as part of public transport, school transport, private transport or another passenger service. Buses generally have more passenger capacity than cars and may be designed to carry seated passengers, standing passengers or both.
Special rules may apply to buses concerning the driving licence, passenger capacity, speed limits, seat belts, bus lanes, stops and passenger boarding. The legal classification of buses and coaches and the rules applying to them vary between countries, so drivers and passengers must follow the local traffic regulations.
Wikimedia.org • Patiparn.Nice2002bkk • CC BY-SA
What is a bus?
A bus is a motor vehicle designed to transport a relatively large number of passengers. It may be used for public transport, school transport, private services or other passenger transport.
🔗 gov.uk • Great Britain Highway Code, Rules 83–88; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 221–223; national guidance example
Do buses always have priority when leaving a bus stop?
No. Some countries require other drivers to give way to buses leaving designated stops, particularly in urban areas, while others apply the normal merging rules.
🔗 gov.uk • Great Britain Highway Code, Rules 83–88; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 221–223; national guidance example
Do buses have special speed limits?
They can. Some countries impose lower maximum speeds on buses than on passenger cars, particularly on high-speed roads. Different limits may apply to buses and coaches.
🔗 gov.uk • Great Britain Highway Code, Rules 83–88; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 221–223; national guidance example
18. Police
Police are public authorities responsible for enforcing laws, maintaining public safety and managing situations that may affect road traffic. In traffic, police officers may control vehicles, enforce traffic rules, investigate collisions, direct traffic and respond to emergencies.
Road users must follow lawful instructions given by police officers or other authorised traffic-control personnel. Police directions may temporarily override traffic lights, road signs or normal traffic arrangements, depending on local law.
Wikimedia.org • Dickelbers • CC BY-SA
What is the role of police in road traffic?
Police help enforce traffic law, investigate collisions and respond to risks on the road. For example, Greater Manchester Police describe targeted road enforcement, a round-the-clock roads-policing response and specialist serious-collision investigation. Exact responsibilities and powers vary by jurisdiction.
🔗 gmp.police.uk • Greater Manchester Police, Roads Policing Strategy2024–2026
Must you obey a police officer directing traffic?
Yes. Lawful directions given by an authorised police officer must be followed. In many countries, those directions take precedence over traffic lights, road signs and normal priority rules.
What should you do if police signal you to stop?
Slow down, follow the officer's directions and stop at a safe location as instructed. Do not make sudden movements or continue driving unless directed to do so.
19. Ambulance
An ambulance is a vehicle equipped and used to provide emergency medical assistance or transport patients to or between healthcare facilities. Ambulances may carry medical equipment and trained personnel who can provide treatment during transport.
During an emergency response, an ambulance may use warning lights and a siren and may receive special priority or exemptions from certain traffic rules. Other road users must follow the local rules for emergency vehicles, make sufficient space and avoid obstructing their passage.
Wikimedia.org • Chanokchon • CC BY-SA
What is an ambulance?
An ambulance is a specially equipped vehicle used to provide emergency medical assistance and transport sick or injured people.
🔗 gov.uk • Great Britain Highway Code, Rule 219, emergency vehicles; national guidance example
What should you do when an ambulance approaches?
Make space safely for an ambulance on an emergency response, following the local rules and any lawful directions. Slow down or stop where necessary without sudden or dangerous movements. Do not assume that its emergency status allows you to pass a red light or disregard another traffic control.
🔗 gov.uk • Great Britain Highway Code, Rule 219, emergency vehicles; national guidance example
Can an ambulance exceed the speed limit?
Many countries permit emergency vehicles to depart from certain normal speed rules during an urgent mission, subject to safety requirements and national legislation.
🔗 gov.uk • Great Britain Highway Code, Rule 219, emergency vehicles; national guidance example
20. Pothole
A pothole is a hole or depression in the road surface caused by wear, weather, water, repeated traffic loads or deterioration of the pavement. Potholes can vary greatly in size and depth and may develop gradually or become worse after freezing, heavy rain or repeated vehicle traffic.
Potholes can affect steering, braking and vehicle stability and may damage tyres, wheels or suspension components. Drivers and riders should observe the road ahead, adapt their speed and avoid sudden or dangerous manoeuvres when encountering damaged road surfaces.
Wikimedia.org • State Farm • CC BY
What is a pothole?
A pothole is a hole or depression that develops in a road surface when the pavement becomes damaged or deteriorates.
What should you do when you see a pothole?
Reduce speed when necessary, maintain control of the vehicle and avoid abrupt steering or braking. Only move around the pothole when this can be done safely without endangering other road users.
🔗 gov.uk • Great Britain Highway Code, Rules 226–237; national guidance example
Are potholes dangerous for cyclists?
Yes. Bicycle wheels can be strongly affected by deep holes or sharp edges, particularly when the cyclist has little time or space to avoid the hazard.
🔗 gov.uk • Great Britain Highway Code, Rules 226–237; national guidance example
21. Path
A path is a relatively narrow route intended for pedestrians and, where permitted, other road users or small vehicles. Paths may run through urban areas, countryside, parks, forests or between other roads and can be surfaced or unsurfaced.
A path is not necessarily the same as a footpath or cycle path. The road users permitted to use it depend on its legal status, width, traffic signs and local regulations.
Wikimedia.org • Tangopaso • CC0
Is a path the same as a footpath?
Not necessarily. A footpath is specifically intended for pedestrians, while a path may also permit cyclists or other users according to local rules.
Can cyclists use a path?
This depends on the legal status, width and signs applying to the path. Some paths permit cyclists, while others are reserved for pedestrians or particular users.
Can motor vehicles use a path?
This depends on local law. Some paths prohibit motor vehicles entirely, while narrow vehicles may be permitted on other paths unless traffic signs restrict access.
Who has priority when a path joins a larger road?
The applicable local priority rules determine who must give way. Special rules often apply when a minor path joins an ordinary road.
22. Particulates
Particulates, or particulate matter (PM), are tiny solid particles or liquid droplets suspended in the air. In road traffic, particulate emissions can come from vehicle exhaust, brake wear, tyre wear and road-surface wear, as well as dust that is disturbed by passing traffic.
Particulate matter is commonly classified by particle size. PM10 refers to particles with a diameter of up to approximately 10 micrometres, while PM2.5 refers to finer particles of up to approximately 2.5 micrometres. Vehicle emission standards, particulate filters and air-quality measures are used to reduce exposure to these pollutants.
Wikimedia.org • wili hybrid • CC BY
What are particulates?
Particulates, or particulate matter, are very small solid particles or liquid droplets suspended in the air.
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
What are PM10 and PM2.5?
PM10 refers to particles with a diameter of up to approximately 10 micrometres. PM2.5 refers to finer particles with a diameter of up to approximately 2.5 micrometres.
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
Where do traffic particulates come from?
Road traffic can produce particles through engine exhaust, brake wear, tyre wear and road-surface wear. Passing traffic can also resuspend dust already present on the road.
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
23. Air pollution
Air pollution is the presence of gases, particles or other substances in the air at concentrations that can harm human health, the environment or ecosystems. Road traffic contributes to air pollution through exhaust emissions and through non-exhaust sources such as brake wear, tyre wear and road dust.
Important traffic-related pollutants include nitrogen oxides, particulate matter, carbon monoxide and volatile organic compounds. Some pollutants are emitted directly by vehicles, while others can form in the atmosphere through chemical reactions. Vehicle-emission standards, cleaner technologies and traffic-management measures are used to reduce these emissions.
Wikimedia.org • Emmanuelkwizera • CC BY-SA
What is air pollution?
Air pollution is the presence of harmful gases, particles or other contaminants in the air. Road transport can contribute through engine emissions, vehicle wear and dust; the sources and pollutants differ by vehicle and conditions.
🔗 epa.gov • US EPA, smog and vehicle emissions
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
How does road traffic cause air pollution?
Vehicles with combustion engines can emit exhaust pollutants. Road traffic also produces particles through brake, tyre and road-surface wear and can stir up road dust. Vehicles without tailpipe emissions can still contribute to these non-exhaust sources.
🔗 epa.gov • US EPA, smog and vehicle emissions
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
Which air pollutants are associated with road traffic?
Important traffic-related pollutants include nitrogen oxides, particulate matter, carbon monoxide and volatile organic compounds. Their relative importance depends on the vehicle, fuel and driving conditions.
🔗 epa.gov • US EPA, smog and vehicle emissions
🔗 epa.gov • US EPA, Particulate Matter Basics
🔗 fhwa.dot.gov • US FHWA, particulate matter and road-transport sources
🔗 epa.gov • US EPA, AP-42 section 13.2.1.1, paved-road emissions and dust resuspension
24. Rush hour
Rush hour is a period when roads and public transport networks experience particularly high demand, commonly because large numbers of people are travelling to or from work, school or other regular destinations. It usually occurs during the morning and late afternoon or evening on working days.
Rush-hour traffic can result in congestion, slower speeds, longer journeys and frequent stopping. Drivers should maintain a safe following distance, remain patient, anticipate changing traffic conditions and follow any temporary or dynamic traffic-management measures.
Wikimedia.org • MDRX • CC BY-SA
What is rush hour?
Rush hour is a period when unusually large numbers of people travel at the same time, resulting in increased traffic and often congestion.
🔗 gov.uk • Great Britain Highway Code, Rules 126 and 133–134; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 174 and 192; national guidance example
Should you increase your following distance in rush-hour traffic?
Yes. Leave sufficient distance to react to sudden braking and frequent changes in traffic speed. Avoid following another vehicle too closely even when traffic is moving slowly.
🔗 gov.uk • Great Britain Highway Code, Rules 126 and 133–134; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 174 and 192; national guidance example
Can speed limits change during rush hour?
Yes. Roads equipped with variable traffic management may display lower speed limits during congestion. Drivers must follow the speed limit currently indicated.
🔗 gov.uk • Great Britain Highway Code, Rules 126 and 133–134; national guidance example
🔗 gov.uk • Great Britain Highway Code, Rules 174 and 192; national guidance example
25. Road code
A road code is a collection of laws and traffic rules that regulate how people use public roads. It establishes rules for drivers, cyclists, pedestrians and other road users and covers subjects such as priority, speed, overtaking, parking, traffic lights, road signs and road markings.
Road codes differ between countries and sometimes between regions. Every road user is expected to know and follow the rules that apply where they are travelling, even when those rules differ from those in their home country.
Are road codes the same in every country?
No. Although many traffic rules and signs are similar internationally, each country establishes its own traffic legislation and may apply different rules, signs, speed limits and requirements.