What is the recommended minimum side clearance when passing two-wheeled vehicles?

Answer: B — 1.5 meters

The recommended minimum side clearance when passing two-wheeled vehicles is 1.5 meters. This distance is crucial for ensuring the safety of motorcyclists and bicyclists on the road. By maintaining this clearance, drivers reduce the risk of accidents caused by wind turbulence, which can destabilize two-wheeled vehicles, especially in close proximity at higher speeds. Additionally, this distance allows enough room for unexpected movements that a rider might make, enhancing the safety for both the motorist and the two-wheeled vehicle operator. Using a clearance that is less than 1.5 meters could increase the likelihood of collisions, particularly in scenarios where the two-wheeled vehicle needs to maneuver or if a sudden obstacle emerges. Hence, the 1.5-meter recommendation serves as a buffer zone to promote safer interactions between different types of vehicles on the roadway.