Answers to practice exam.  If you have questions about where these numbers came from, send me an email.

Problem 1
	1. Report current condition (but there are many miles of roadway); predict future condition (the future is impossible to predict); report optimal maintenance actions (with a limited budget and a lot of needs).
	2. Every used route connecting an origin and destination has equal and minimal travel time.  Route choice.
	
Problem 2
	1. No
	2. No
	3. 29 ft

Problem 3
	1. 1910 ft, 45 degrees
	2. No
	3. 0.24
	
Problem 4
	1. Surface course, base, subbase, subgrade
	2. 8.5 in
	3. Probably greater than 2.8, because the subbase is a weaker foundation than the base