How do engineers determine the most efficient highway designs? Introduce young scientists to the world of topology, the branch of mathematics that examines how things are connected. Teams use model highways to create the most...

[Free Registration/Login Required] A literary text about a brother and sister playing I-Spy with street signs. A question sheet is available to help students build skills in reading comprehension.

This site is devoted to the Highway Safety Act of 1966 and related safe highway practices. At the core, it is a movement to "save" the assault on highway safety.