Spiral Transition Curve

52:16
Vertical Curves

21:51
What Engineers Do?

33:08
Sample Problem on Spiral Transition Curve

11:48
'My jaw is dropped': Canadian official's interview stuns Amanpour

31:51
Visualizing quaternions (4d numbers) with stereographic projection

43:35
Spot Speed Studies

36:03
Traffic Data Collection

3:25:28