Under which condition would the expressway speed be reduced to 55 mph?

• A. Urban areas with high traffic volumes, merging traffic, and curves
• B. Rural areas with low traffic
• C. In winter conditions on icy roads
• D. When there is a construction zone end sign

Answer: (A)

Expressway speeds are lowered in areas where safety risks are higher due to traffic patterns and road layout. In urban sections, heavy traffic, frequent merging vehicles, and curves create more potential conflict points and reduce reaction time. Dropping the limit to 55 mph gives drivers more margin to slow, merge smoothly, and navigate curves safely, which is why this condition matches a reduced expressway speed of 55 mph.

In contrast, rural areas with light traffic usually allow higher speeds; winter icy conditions can require slower speeds based on actual road conditions; and a construction zone end sign signals the end of a temporary reduction, not the general urban-caused 55 mph limit.