On a two-way highway, a tractor-trailer is coming toward you in the opposite lane. How does its size tend to fool drivers?

Why

Size plays tricks on judgment. A large truck coming toward you often looks slower than it really is, and from far away it may also look smaller than it is, so it reaches you sooner than you expect. The manual warns against underestimating both its speed and its size. The second option reverses the effect; it is motorcycles, small and easy to misjudge, that can seem farther away and harder to read. The third invents a problem the manual does not describe, and in fact the manual suggests keeping as far to the right as you can on a two-way road so an oncoming truck does not hit you. Assume the oncoming truck is both faster and bigger than your eyes report, and move right accordingly.