Road narrowingCzechia
22. Road narrowing
A road narrowing is a section where the available width of the road or carriageway becomes smaller. The narrowing may occur on both sides, on one side only, or because one or more traffic lanes end.
Drivers should reduce speed, observe approaching and adjacent traffic, maintain sufficient lateral clearance and merge when necessary. Warning signs do not always determine priority, so drivers must follow any priority signs, lane markings and local traffic rules.
Wikimedia.org • ŠJů • CC BY-SA
What does a road-narrowing warning mean in Czechia?
Czech narrowing warnings identify reduced carriageway width on one or both sides. Read the diagram separately from a lane-ending or opposing-flow priority control.
🔗 e-sbirka.gov.cz • Czechia, Decree 294/2015 — current sign and marking descriptions, annexes 1–10
Warning for a road narrowing.
English • Traffic sign A 6a • Road narrows on both sides. The sign warns of a place where the carriageway narrows substantially on both sides compared with the preceding section.
Čeština • Dopravní značka A 6a • Zúžená vozovka z obou stran. Značka upozorňuje na místo, kde se vozovka oproti předcházejícímu úseku výrazně zužuje, a to z obou stran.
Sources
🔗 Commons.wikimedia.org • 🔗
🔗 E-sbirka.gov.cz • Vyhláška č. 294/2015 Sb. • A 6a • znění účinné od 1. 7. 2025
SVG source: Government of the Czech Republic • Public domain • Original revision 2013-12-06. Wikimedia original unmodified.
Warning for a road narrowing on the right.
English • Traffic sign A 6b • Road narrows on one side. The sign warns of a place where the carriageway narrows substantially on one side compared with the preceding section. The symbol is drawn to reflect the actual narrowing on either the left or right.
Čeština • Dopravní značka A 6b • Zúžená vozovka z jedné strany. Značka upozorňuje na místo, kde se vozovka oproti předcházejícímu úseku výrazně zužuje z jedné strany. Symbol značky je proveden tak, aby odpovídal skutečnému zúžení vozovky buď z levé, nebo z pravé strany.
Sources
🔗 Commons.wikimedia.org • 🔗
🔗 E-sbirka.gov.cz • Vyhláška č. 294/2015 Sb. • A 6b • znění účinné od 1. 7. 2025
SVG source: Life of Riley • Public domain • Original revision 2011-10-18. Wikimedia original unmodified.
Artwork verified against E-sbirka.gov.cz • official published diagram A 6b.
Does a narrowing warning give you priority in Czechia?
No. A warning describes the reduced width, rather than allocating priority or setting a numerical speed limit. Follow any separate priority signs, signals and meeting rules, and slow enough to pass safely or wait before entering.
🔗 e-sbirka.gov.cz • Czechia, Decree 294/2015 — current sign and marking descriptions, annexes 1–10
What should you do if traffic lanes merge at a narrowing in Czechia?
Czech law provides alternating merging when traffic in parallel lanes reaches the end of a lane under the statutory conditions. Use the actual markings and arrangement; do not treat the zipper rule as priority over traffic travelling in the opposite direction.
🔗 e-sbirka.gov.cz • Czechia, Decree 294/2015 — current sign and marking descriptions, annexes 1–10

Traffic rules
Czechia