Knowledge exam
What is the maximum speed for a heavy lorry without a trailer on a road with this combination of signs?
A heavy lorry is permitted to drive at a maximum speed of 90 km/h on motorways and clearways and a maximum 80 km/h on all other roads.
Since the sign does indicate that this is a motorway, the applicable speed is 90 km/h.
Reasons for limiting the speed of heavy lorries:
- Lower emissions (lower speed = lower fuel consumption).
- Increased traffic safety (shorter braking distance and fewer lorries overtaking).
- The small time gain does not make up for the increased costs of fuel and wear.
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Category:
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