Final answer:
The Identify step becomes more difficult on expressways with higher speeds, multiple lanes, and heavier volumes of traffic due to reduced reaction times and increased cognitive demands on drivers.
Step-by-step explanation:
The question addresses the impact of driving conditions on the ability to identify hazards on the road. Higher speeds on the expressway combined with multiple lanes to watch, and heavier volumes of traffic can affect the step in which drivers need to identify potential hazards. The correct answer is C. Make the Identify step more difficult. This is because at higher speeds, the driver's reaction time is reduced, and with more lanes and greater volumes of traffic, the cognitive load on the driver increases. This complexity necessitates heightened awareness and quick processing of information to maintain safety. Efficient traffic signals can aid in controlling speeds and improving the predictability of traffic flow.