International borderPortugal

An introduction to the traffic rules and road signs of Portugal. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.

For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.


18. International border

An international border is the legal boundary between two countries. A border sign may identify the country being entered and remind drivers that different traffic laws, speed limits, road signs, vehicle requirements and document rules may apply.

The border sign itself does not normally require drivers to stop. Passport, immigration or customs controls may take place at a checkpoint, but some international borders can be crossed without routine controls under regional agreements.

International border
An international border sign when entering Portugal.
Wikimedia.org • Stephen Colebourne • CC BY
What is an international border?

An international border is the legal boundary between two countries.

🔗 dictionary.cambridge.org • Cambridge Dictionary, international border definition

Does a border sign require you to stop?

Not normally. Stop only when required by traffic lights, barriers, officers, customs signs, passport controls or another instruction.

🔗 europa.eu • Your Europe, travel documents for EU nationals; EU example

🔗 wetten.overheid.nl • Vienna Convention on Road Signs and Signals, Annex 1, section G V.4, general-speed information at frontiers; sign-system reference

Can speed limits change at the border?

Yes. The destination country may have different general limits for motorways, built-up areas, rural roads and particular vehicle categories.

🔗 europa.eu • Your Europe, travel documents for EU nationals; EU example

🔗 wetten.overheid.nl • Vienna Convention on Road Signs and Signals, Annex 1, section G V.4, general-speed information at frontiers; sign-system reference

1 Portugal 2 Motorway 3 Zone 4 Speed limit 5 Bike path 6 Bus stop 7 Dead end 8 Stop sign 9 Roundabout 10 Railway crossing 11 Mandatory direction 12 School area 13 Overtaking 14 Crossing animals 15 Wrong-way driving 16 Traffic lights 17 Traffic mirror 18 International border 19 Parking 20 No parking 21 Disabled parking 22 Reversing 23 Tourist attraction 24 Licence plate 25 Charging station 26 Bus 27 Police 28 Ambulance 29 European emission standard 30 Pothole 31 Path 32 Particulates 33 Air pollution 34 Rush hour 35 Road code 36 Street gutter 37 Cargo bike 38 Forestry vehicle 39 Construction vehicle 40 Semi-trailer truck 41 Trolleybus 42 Speed pedelec 43 Delivery vehicle 44 Idling 45 Tow truck 46 Four-wheel drive 47 Bicycle 48 Motorcycle equipment 49 Rail track 50 Caravan 51 Trailer 52 Tow hitch 53 Fire truck 54 Siren 55 Convoy 56 Emergency vehicle lighting 57 Agricultural machinery 58 Electric bicycle 59 Electric vehicle 60 Pedelec 61 Quadricycle 62 Microcar 63 All-terrain vehicle 64 Van 65 Recreational vehicle 66 Scooter 67 Trikke 68 Personal mobility device 69 Skateboard 70 Segway 71 Kick scooter 72 Roller skates 73 Mailman 74 Hitchhiker 75 Toddler 76 Child 77 Disability 78 Motorail 79 km/h 80 mph 81 Speedometer 82 Ride height 83 Dirt road 84 Driving 85 Start-stop system 86 Manual transmission 87 Automatic transmission 88 Throttle 89 Tachometer 90 Steering wheel 91 Power steering 92 Visual scanning 93 Mirror 94 Fuel 95 Fuel gauge 96 Petrol 97 Diesel 98 Diesel exhaust fluid 99 Car insurance 100 First aid kit ...