Road works change the traffic picture quickly. Temporary signs and lights override the permanent regulation, so you must adjust speed, lane position and communication early.
Principles in work zones
- Temporary signs and lights take priority over the permanent scheme
- Lower speed in advance and monitor mirrors and blind spots more often
- Follow instructions from flaggers or traffic controllers
See also Speed limits and Traffic system lights.
Typical signs and signals
| Sign/signal | Meaning | Action |
|---|---|---|
| Road works | Warns about works on or near the carriageway | Slow down and increase spacing |
| Lane reduction | One or more lanes close | Prepare for Merging and queue driving |
| Arrow signals | Overhead arrows show open and closed lanes | Follow green arrow, leave lane with red X |
| Temporary traffic lights | Controls alternating traffic | Obey like standard signals |
| Temporary speed limit | Lower limit through the site | Applies until a new sign cancels it |
More on lane selection in Signage and lane choice.
Driving technique inside the work area
- Keep a steady, low speed and long distance to the vehicle ahead
- Look far ahead for flaggers, signs and arrow signals
- Indicate early and clearly when changing lanes
- Watch for vulnerable road users and machinery crossing the lane
Priority and authority
Manual direction from police, controllers or site staff overrules signs and signals. Read Traffic control and traffic flow.
Quick checklist
- Spot the first work-zone warning and plan lane choice
- Reduce speed before the taper
- Follow temporary lights and flaggers
- Merge calmly and keep generous gaps