How much side clearance should drivers maintain when passing two-wheeled vehicles?

Answer: B — At least 1.5 meters

Maintaining at least 1.5 meters of side clearance when passing two-wheeled vehicles is essential for safety. This distance helps ensure that there is adequate space between the passing vehicle and the two-wheeled vehicle. Two-wheeled vehicles, such as motorcycles or bicycles, can be more vulnerable to the effects of wind disturbance caused by larger vehicles, or sudden movements. By allowing this 1.5-meter buffer, drivers reduce the risk of accidental collisions or causing instability for the rider. Additionally, this distance provides a safety margin that helps accommodate any unpredictable actions from the two-wheeled vehicle, such as swerving or sudden lane changes, which can often happen in traffic. Therefore, this guideline is crucial in promoting road safety and protecting all users.