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Speed Limits and Control
- 1/20If driving a truck >3.5t on highways
This limit reduces stopping distance and gives drivers more reaction time, essential due to the heavy weight and long braking distances of trucks.
When driving on main extra-urban roads
Lower limits here prevent rollovers and loss of control, as these roads have more curves and uneven surfaces.
If on urban roads
This ensures safety for pedestrians, cyclists, and other vehicles in high-traffic environments.
When overtaking speed limits
Higher speeds greatly increase braking distance and reduce stability, risking severe accidents.
If towing a trailer in rain/snow
Wet or icy roads reduce tire grip, so lowering speed helps prevent skidding and jackknifing.
When approaching construction zones
Workers are nearby and lanes may be narrow, so lower speeds reduce collision risk.
If exceeding limits in school zones
Children may cross unexpectedly; reduced speed allows drivers to stop safely.
For mountain or curvy roads
Sharp curves and steep slopes require slower speeds to maintain control and avoid tipping.
If speed is over limit by >60 km/h
Extremely high speed in a truck makes it impossible to stop in time in emergencies.
When controlling speed on descents
Prevents brake overheating and loss of stopping power on long downhill stretches.
If tachograph shows overspeeding
Tachographs ensure compliance; overspeeding increases fatigue and accident risk.
When carrying hazardous goods
In case of accidents, dangerous goods can cause severe harm, so slower speeds minimize risk.
If speed causes cargo to shift
Sudden braking or sharp turns at high speeds can dislodge cargo, causing instability.
When weather reduces visibility
Reduced visibility increases reaction time needed to detect and avoid hazards.
For speed in tunnels
Tunnels have confined spaces; slower speeds help prevent chain-reaction crashes.
If ignoring variable electronic signs
These signs adjust limits for weather, traffic, or incidents to maintain safety.
When approaching sharp bends
Slower speeds prevent trucks from crossing lanes or overturning in tight turns.
For speed near pedestrian crossings
Pedestrians may step out suddenly; slower speeds improve stopping ability.
If braking distance is too short
Tailgating at high speeds leads to unavoidable rear-end collisions.
When overtaking downhill
High speed downhill reduces stability and makes overtaking far more dangerous.