Weight limitCzechia

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


36. Weight limit

A weight limit prohibits vehicles or vehicle combinations whose mass exceeds the value shown from entering or passing a road section, bridge, tunnel or other structure. Depending on local law, the restriction may concern the vehicle’s actual loaded mass, maximum authorised mass or load on an individual axle.

Drivers must know which type of mass the sign refers to and must include the vehicle, passengers, cargo and any trailer where required. A vehicle that exceeds the limit must use another suitable route.

Weight-limit signs at the bridge over Pitkovický Stream on Rooseveltova. (Kuří, Czechia)
Wikimedia.org • ŠJů • CC BY
Does every weight-limit sign measure the same kind of vehicle weight in Czechia?

Czech B13 restricts actual loaded mass. For a combination, its number applies to each vehicle separately; a supplementary Jediné vozidlo plate has its own special combined-mass rule. B14 instead restricts actual axle load, while the goods-vehicle restriction B4 uses a different vehicle-category and authorised-mass framework. Read the exact sign and plate rather than treating all mass limits alike.

🔗 e-sbirka.gov.cz • Czechia, Road Traffic Act 361/2000 — sections 4, 18; Decree Annex 3 B4, B13–B17

🔗 e-sbirka.gov.cz • Czechia, Decree 294/2015 — current sign and marking descriptions, annexes 1–10

Trucks prohibited. Trucks prohibited.

English • Traffic sign B 4 • No lorries. The sign prohibits entry by lorries and special-purpose vehicles. It also prohibits tractors whose maximum authorised mass exceeds 3500 kg and whose design speed is 80 km/h or more. It does not apply to motor caravans. If a maximum authorised mass is shown on a supplementary plate or below the lorry symbol on the sign, the prohibition applies to vehicles whose maximum authorised mass exceeds that value. For vehicle combinations, the sum of the maximum authorised masses of all vehicles in the combination is decisive.

Čeština • Dopravní značka B 4 • Zákaz vjezdu nákladních automobilů. Značka zakazuje vjezd nákladním automobilům a vozidlům zvláštního určení. Značka rovněž zakazuje vjezd traktorům, jejichž největší povolená hmotnost převyšuje 3500 kg a jejichž konstrukční rychlost je 80 km.h-1 nebo více. Značka neplatí pro obytné automobily. Je-li na dodatkové tabulce nebo na značce pod symbolem nákladního automobilu uvedena hodnota největší povolené hmotnosti, platí značka pro vozidla o největší povolené hmotnosti převyšující tuto hodnotu. U jízdní soupravy je rozhodný součet největších povolených hmotností všech vozidel soupravy.

Sources

🔗 Commons.wikimedia.org • 🔗
🔗 E-sbirka.gov.cz • Vyhláška č. 294/2015 Sb. • B 4 • znění účinné od 1. 7. 2025

SVG source: มองโกเลีย๔๔ • CC0 • Original revision 2026-05-20. Wikimedia original unmodified.

Artwork verified against E-sbirka.gov.cz • official published diagram B 4.

Vehicles heavier than indicated prohibited. Vehicles heavier than indicated prohibited.

English • Traffic sign B 13 • No vehicles whose actual mass exceeds the indicated limit. The sign prohibits entry by vehicles whose actual mass exceeds the value shown. For a vehicle combination, the value applies separately to each vehicle in the combination. If a supplementary plate reads “Single vehicle ... t”, a vehicle may enter the section if its actual mass, or the combined actual mass of all vehicles in a combination, exceeds the value on the main sign but not the value on the supplementary plate.

Čeština • Dopravní značka B 13 • Zákaz vjezdu vozidel, jejichž okamžitá hmotnost přesahuje vyznačenou mez. Značka zakazuje vjezd vozidel, jejichž okamžitá hmotnost přesahuje údaj uvedený na značce. Jde-li o jízdní soupravu, vztahuje se tento údaj na každé vozidlo soupravy zvlášť. V případě, že je značka doplněna dodatkovou tabulkou s nápisem „Jediné vozidlo ... t“, smí do takto označeného úseku vjet vozidlo, jehož okamžitá hmotnost, a jde-li o jízdní soupravu, okamžitá hmotnost všech vozidel soupravy, sice přesahuje údaj na značce, nikoli však údaj na dodatkové tabulce.

Sources

🔗 Commons.wikimedia.org • 🔗
🔗 E-sbirka.gov.cz • Vyhláška č. 294/2015 Sb. • B 13 • znění účinné od 1. 7. 2025

SVG source: มองโกเลีย๔๔ • Public domain • Original revision 2026-05-19. Wikimedia original unmodified.

Artwork verified against E-sbirka.gov.cz • official published diagram B 13.

Vehicles exceeding the axle-load limit prohibited. Vehicles exceeding the axle-load limit prohibited.

English • Traffic sign B 14 • No vehicles whose actual axle load exceeds the indicated limit. The sign prohibits entry by vehicles whose actual mass borne by an axle exceeds the value shown.

Čeština • Dopravní značka B 14 • Zákaz vjezdu vozidel, jejichž okamžitá hmotnost připadající na nápravu přesahuje vyznačenou mez. Značka zakazuje vjezd vozidel, jejichž okamžitá hmotnost připadající na nápravu přesahuje údaj uvedený na značce.

Sources

🔗 Commons.wikimedia.org • 🔗
🔗 E-sbirka.gov.cz • Vyhláška č. 294/2015 Sb. • B 14 • znění účinné od 1. 7. 2025

SVG source: มองโกเลีย๔๔ • Public domain • Original revision 2026-05-27. Wikimedia original unmodified.

Artwork verified against E-sbirka.gov.cz • official published diagram B 14.

Do cargo and trailers matter for a posted weight restriction in Czechia?

Yes, whenever the rule is based on actual loaded mass or the total mass of a combination. Cargo, passengers and the trailer affect that figure; weight on individual axles may be limited separately. If the sign instead uses authorised maximum mass, an empty vehicle may still be prohibited.

🔗 e-sbirka.gov.cz • Czechia, Road Traffic Act 361/2000 — sections 4, 18; Decree Annex 3 B4, B13–B17

🔗 e-sbirka.gov.cz • Czechia, Decree 294/2015 — current sign and marking descriptions, annexes 1–10

What should you do if your vehicle exceeds a bridge weight limit in Czechia?

Do not drive onto the bridge. Follow the signed alternative route and check the vehicle’s gross and axle loads as applicable. A general heavy-vehicle permit does not automatically authorise crossing every restricted bridge.

🔗 e-sbirka.gov.cz • Czechia, Road Traffic Act 361/2000 — sections 4, 18; Decree Annex 3 B4, B13–B17

🔗 e-sbirka.gov.cz • Czechia, Decree 294/2015 — current sign and marking descriptions, annexes 1–10

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