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Difficulty: EasyTraffic Calming and Road Surfaces

What is the main purpose of rumble strips painted across the road on the approach to a roundabout or pedestrian crossing?

  1. A
    To significantly reduce your vehicle's braking distance when stopping quickly
  2. To alert you to your speed and warn you of an upcoming hazard through noise and vibrationAnswer
  3. C
    To prevent your vehicle from skidding if you apply harsh footbraking
  4. D
    To mark a designated buffer zone where cyclists can be overtaken closely

Answer

To alert you to your speed and warn you of an upcoming hazard through noise and vibration
Rumble strips are raised textured lines laid across the carriageway. Driving over them produces sound and vibration inside the vehicle, alerting drivers to monitor their speed and prepare for an approaching hazard, sharp bend, or junction.

Step-by-Step Solution

1
Identify the physical design and sensory feedback of rumble strips.
Recognise that driving over raised, textured strips generates sound and vibration through the tyres and suspension.
Rumble strips are specifically designed to stimulate driver awareness through auditory and tactile cues.
2
Relate this sensory feedback to traffic management and driver reaction.
The feedback encourages the driver to assess their speedometer and anticipate an upcoming hazard such as a junction or crossing.
Early sensory warnings ensure drivers adjust their speed safely well before reaching the point of conflict.

Key Concept

Purpose and effect of rumble strips as traffic calming devices
Estimated Time:45s
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Topics

Traffic Calming and Road Surfaces

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