Como as estradas são projetadas?
12:37
How Do Traffic Signals Work?
17:21
Every Construction Machine Explained in 15 Minutes
16:56
L'ingénierie cachée des passages pour animaux
19:05
The Simple Genius of the Interstate Highway System
15:11
How Road Barriers Stopped Killing Drivers
24:42
More Lanes are (Still) a Bad Thing
10:01
Why Does Road Construction Take So Long?
6:20