ObrasSuiza

Roadworks are construction, maintenance, repair or inspection activities carried out on or beside a road.

They may be indicated by a roadworks warning sign, cones, barriers, temporary markings, flashing lights, machinery or workers.

No, not by itself. A separate temporary or permanent speed-limit sign establishes the legal maximum speed.

Yes, when necessary. Narrow lanes, workers, machinery, poor surfaces, congestion or limited visibility may require a substantially lower speed.

Yes. Correctly installed temporary signs must be obeyed for as long as they are in force.

Follow the temporary markings that guide traffic through the works. Local law determines how they take priority over older permanent markings.

Yes. Stop at the line or signal when required and do not proceed until the applicable light permits it.

Obey instructions from workers or controllers who are legally authorised to regulate traffic. Their signals may temporarily replace the ordinary traffic arrangement.

Observe the signs and lane arrows, check mirrors and blind spots and merge safely into the continuing lane.

Zipper merging means that vehicles in an ending or blocked lane merge alternately with vehicles in the continuing lane near the narrowing during congested traffic.

This depends on local law and traffic conditions. Where zipper merging applies during congestion, use both lanes and merge near the narrowing. In flowing traffic, change lanes when a safe gap is available.

Without another traffic control, the driver whose route is obstructed commonly has to yield before moving into the path of approaching or adjacent traffic.

Yes. Temporary signals may allow only one direction at a time through a narrow section.

No. Do not enter a narrow section, intersection or temporary crossing when congestion may leave you stopped inside it.

No. Do not move, pass around or ignore traffic-control equipment unless an authorised person instructs you to do so.

Only when signs and markings permit it and sufficient width and visibility remain. Overtaking is often unsafe in narrow or shifted lanes.

Only where temporary and permanent signs permit it. Do not obstruct workers, machinery, emergency access or temporary pedestrian and cycle routes.

Expect workers to enter the road, machinery to move or reverse and vehicles to leave the worksite. Reduce speed and leave generous space.

Follow the signed temporary cycle route or lane. Check surrounding traffic carefully before leaving a closed or obstructed bike path.

Use the designated temporary walkway or crossing and follow barriers, signs, signals and instructions from authorised personnel.

Traffic may brake suddenly because of queues, lane changes, machinery, debris or changing signals. Additional distance provides more time to react.

Move to the safest available location where possible, activate the hazard warning lights and contact assistance. Avoid standing in a live or narrow traffic lane.

Yes. Rules concerning safe speed, following distance, signalling, priority and vulnerable road users continue to apply unless a lawful temporary arrangement changes them.