Which two factors are drivers unable to control in risk management?

Drivers cannot control factors related to the roadway and environment, making this the correct answer. Aspects such as the layout of the road, the presence of obstacles, and the overall conditions of the surrounding environment, including road surface quality and nearby infrastructure, are all beyond a driver’s influence. These factors can significantly impact driving safety and risk levels.

In contrast, other options consist of factors that a driver has either direct control over or can adapt to. For example, speed and visibility depend on how the driver chooses to drive and the precautions they take, such as adjusting speed according to safe driving conditions. Vehicle condition and driver experience relate to the driver's responsibility to maintain their vehicle and enhance their driving skills through education and practice. Lastly, while weather is a factor largely beyond control, traffic signals are engineered responses to traffic and are meant to guide driver behavior; therefore, drivers must comply with them but do not control their functioning.