When should passengers get on a motorcycle?

Passengers should get on a motorcycle after the motorcycle has started to ensure safety and stability. When the motorcycle is in motion or moving, the rider may not be able to maintain balance properly, which could lead to an accident or an unsafe situation. Likewise, having passengers mount the bike before starting could also make it difficult to balance the motorcycle as the rider prepares to take off. Waiting until the motorcycle is started allows the rider to be in control of the vehicle and ready to manage the added weight and shifting that the passenger presents.

Getting on only at a stop sign, while safer than other options, is not a general rule for mounting a motorcycle. The most appropriate scenario is after the motorcycle has been started and the rider is ready to begin moving. Therefore, the guideline emphasizes passenger safety and rider control when on a motorcycle.