Final answer:
The visual lead should increase with higher speeds to provide sufficient reaction time and ensure safety. At higher speeds, longer visual leads allow for better anticipation of hazards and necessary response actions while driving.
Step-by-step explanation:
The visual lead should increase to counteract the high speed of travel. When an object's velocity increases, one must increase the visual lead, meaning looking further ahead, to anticipate potential hazards and react in time.
This principle is based on the idea that higher speeds lead to longer stopping distances and shorter reaction times. Keeping the visual lead constant or decreasing it would not provide the necessary time for an individual to respond appropriately to the changing environment at higher velocities.
For instance, if you are driving a car at higher speeds, you need to look further down the road compared to when you are driving slowly. By increasing the distance you look ahead (visual lead), you give yourself more time to react to any potential changes, such as slowing traffic, road signs, or hazards. This is essential for maintaining safety and making timely decisions while in motion.