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Zorluk: ZorMotorcyclists

You are driving on an exposed dual carriageway in strong, gusty winds. Ahead of you in the left-hand lane, a motorcyclist is overtaking a high-sided lorry. What hazard should you anticipate as the rider reaches the front of the lorry?

  1. A
    The motorcyclist accelerating suddenly due to a complete drop in aerodynamic resistance
  2. B
    The motorcyclist swerving sharply into the lorry's front blind spot to regain road grip
  3. The motorcyclist being blown sideways across the carriageway by a sudden blast of crosswindCevap
  4. D
    The motorcyclist losing tyre adhesion immediately due to air turbulence under the wheels

Cevap

The motorcyclist being blown sideways across the carriageway by a sudden blast of crosswind.
Motorcyclists are particularly vulnerable to side winds and turbulence. When overtaking a high-sided vehicle in windy conditions, the lorry shields the rider temporarily. As the motorcyclist clears the front of the cab, they suddenly lose this windbreak and are hit by the full strength of the crosswind, which can violently push them sideways across the lane or carriageway.

Adım Adım Çözüm

1
Analyse the environmental and physical conditions affecting the vulnerable road user.
Identify that strong side winds are present on an exposed road and that the high-sided lorry creates a temporary sheltered zone.
Large vehicles block side winds, altering the air flow around passing traffic.
2
Evaluate the effect of emerging from the vehicle's wind shadow.
Recognise that as the motorcyclist passes the front of the lorry cab, the shelter abruptly disappears and full-strength crosswinds strike the rider.
Lightweight two-wheeled vehicles are exceptionally vulnerable to sudden lateral gusts, which can push them sideways into adjacent lanes.
3
Determine the necessary driver response.
Hold back, avoid driving alongside the motorcyclist, and allow generous lateral clearance.
Anticipating this sudden deviation prevents a collision if the rider is blown across the carriageway.

Anahtar Kavram

Vulnerability of motorcyclists to crosswinds and sudden buffeting when emerging from the shelter of large vehicles
Tahmini Süre:1m 0s
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