Vehicle speed on construction sites is a major contributing factor to pedestrian strikes and collisions. Unlike public roads, construction sites have uneven surfaces, poor visibility, frequent reversing, and workers on foot sharing the same space. Speed limits must be set, enforced, and communicated to every driver entering the site. Properly planned traffic routes with clear signage reduce the risk of serious vehicle-related incidents.
Key Hazards
Pedestrian strikes from vehicles travelling too fast for site conditions
Loss of vehicle control on uneven, muddy, or sloping ground surfaces
Collisions at blind corners, junctions, and narrow haul road sections
Increased stopping distances on loose, wet, or gravelled site surfaces
Control Measures
Set site speed limits appropriate to the ground conditions and typically no more than 15 mph.
Install clear speed limit signs at the site entrance and at key locations along traffic routes.
Use speed bumps, rumble strips, or chicanes to physically enforce reduced speed in key areas.
Design one-way traffic systems to reduce the risk of head-on collisions on narrow routes.
Provide adequate turning circles and passing places for the largest vehicles expected on site.
Ensure all traffic routes are maintained with potholes filled and drainage managed.
Brief all drivers on the site traffic management plan before they are permitted to drive on site.
Monitor vehicle speeds through supervision and take disciplinary action for repeat offenders.
Review traffic routes and speed limits whenever the site layout or activities change.
Remember
Site speed limits are typically 10 to 15 mph but should be lower in congested areas.
A dumper at 15 mph needs significantly more stopping distance on loose ground than tarmac.
All drivers including delivery vehicles must be briefed on site rules before entering.
Speed bumps and physical measures are more effective than signs alone at controlling speed.
One-way systems reduce the risk of head-on collisions and simplify traffic management.
Report any potholes, damaged signs, or poor visibility on traffic routes immediately.
Applicable Legislation: CDM Regulations 2015 · Workplace (Health, Safety and Welfare) Regulations 1992 · Health and Safety at Work etc. Act 1974