Practice Quiz

Civil Engineering PE

Category - Transportation

Start a Study Session Sign up for Question of the Day
The decision sight distance for an urban roadway with a speed of 45 miles per hour (mph) and a maneuver B is which of the following?
  1. 602 feet
  2. 689 feet
  3. 796 feet
  4. Not enough information provided
Explanation
Answer: C - The decision sight distance for an urban roadway with a speed of 45 miles per hour (mph) and a maneuver B is 796 feet.

Solution: Use the Decision sight distance equation (Maneuver B)

d = 1.47Vt + 1.075V2/a

Where t = 9.1 seconds

V = 45 mph

a = 11.2 ft/s2

d = 1.47(45) (9.1)+ 1.075(45)2/11.2

= 602 + 194 = 796 feet
Was this helpful? Upvote!
Login to contribute your own answer or details
Start a Study Session Sign up for Question of the Day

Top questions

Related questions

Most popular on PracticeQuiz