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Length limitFrance

An introduction to the traffic rules and road signs of France. 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.

Traffic signs
Traffic rules
France

49. Length limit

A length limit is a restriction that prohibits vehicles or vehicle combinations longer than a specified maximum length from entering a road or area. The stated length normally includes the complete vehicle combination and any load where national rules specify this.

Length restrictions are commonly used where long vehicles cannot safely negotiate narrow streets, tight bends, bridges, tunnels or other constrained road layouts. Drivers whose vehicle exceeds the indicated limit must use another permitted route.

Length limit of 10 metres. Dead-end street with passage for pedestrians and cyclists. (Haute-Savoie, France)
Wikimedia.org • Marc Mongenet • CC BY-SA
Why might a road have a vehicle-length restriction in France?

A limit may protect tight bends, bridges or streets where a long combination cannot turn or pass safely, including around historic centres, tunnels and older bridges. Read the actual sign; a length prohibition is different from a general warning about a narrow road.

🔗 legifrance.gouv.fr • French Road Code — R411-25; 1967 order B11–B13

Vehicles longer than indicated prohibited. Vehicles longer than indicated prohibited.

English • Traffic sign B10a • No vehicles, articulated vehicles, double road trains or vehicle combinations longer than indicated.

Français • Panneau B10a • Accès interdit aux véhicules, véhicules articulés, trains doubles ou ensemble de véhicules dont la longueur est supérieure au nombre indiqué.

Sources

🔗 Commons.wikimedia.org
🔗 Equipementsdelaroute.cerema.fr • Arrêté du 24 novembre 1967

© Roulex 45 et les contributeurs Wikimedia • CC BY-SA 4.0 • SVG original non modifié.

Image via Commons.wikimedia.org
Roulex 45 • CC BY-SA 4.0 • Source revision 2013-04-26. Wikimedia original unmodified.

Is a trailer included in the signed length restriction in France?

Where the sign restricts the length of a vehicle combination, measure the complete combination rather than just the towing vehicle. Any protruding load may also matter under the local legal measurement rules. Check the wording and vehicle class covered by the sign.

🔗 legifrance.gouv.fr • French Road Code — R411-25; 1967 order B11–B13

What if your vehicle combination exceeds a signed length limit in France?

Choose another permitted route before entering the restricted section. Do not assume a wide carriageway is suitable: long vehicles need room for their swept path, particularly at sharp bends, junctions and roundabouts.

🔗 legifrance.gouv.fr • French Road Code — R411-25; 1967 order B11–B13

1 France 2 Motorway 3 Expressway 4 Residential area 5 Zone 6 Speed limit 7 Minimum speed 8 Advisory speed 9 Footpath 10 Bike path 11 Pedestrian warning 12 Tunnel 13 Bridge 14 Cycling street 15 Pedestrian zone 16 Speed bump 17 Toll road 18 Customs 19 One-way traffic 20 Quay 21 Slope 22 Bus lane 23 Bus stop 24 Dead end 25 Stop sign 26 Give way 27 Roundabout 28 Priority road 29 Road narrowing 30 Priority over oncoming traffic 31 Give way to oncoming traffic 32 Pedestrian crossing 33 Railway crossing 34 Mandatory direction 35 Turn prohibition 36 School area 37 Overtaking 38 Crossing animals 39 Slippery road 40 Rockfall 41 Aircraft 42 Curve 43 Chevron 44 Wrong-way driving 45 Roadworks 46 Crosswind 47 Height limit 48 Width limit 49 Length limit 50 Weight limit 51 Radar speed sign 52 Selective barriers 53 Low-emission zone 54 Priority at the next junction 55 Traffic lights 56 Traffic lights warning 57 Pedestrian lights 58 Road markings 59 Junction layout 60 Bike box 61 Speed feedback 62 Driving licence 63 Location marker 64 Road number 65 Countdown markers 66 Public toilet 67 Rest area 68 Traffic mirror 69 Emergency telephone 70 International border 71 Cycling route 72 End of restriction 73 Parking 74 No parking 75 No stopping 76 Parallel parking 77 Alternate-side parking 78 Parking meter 79 Parking disc 80 Disabled parking 81 Traffic management 82 Merging 83 Reversing 84 U-turn 85 Carpool 86 Traffic jam 87 Uncontrolled crossroad 88 Road surface 89 Ring road 90 Exit 91 Information point 92 Horse riding 93 Provisional licence 94 Hazardous cargo 95 Emergency exit 96 Runaway truck ramp 97 Radio service 98 Oversize load 99 Lane 100 Tyre inflation station ...