4.2 Sight Distances

Question 1

___ is the length of the roadway ahead visible to the driver.

Answer 1

sight distance

Question 2

What are the 2 types of sight distance?

Answer 2

1. stopping sight distance
2. passing sight distance

Question 3

___ is the total distance traveled during the three time intervals.

Answer 3

stopping sight distance

Question 4

The time for the driver to perceive the hazard + the time to react

Answer 4

PIEV time

Question 5

The time to stop the vehicle after the brakes are applied.

Answer 5

braking time

Question 6

distance traveled the perception-reaction time (PIEV distance: constant motion).

Answer 6

d

Question 7

Distance required for stopping the after the brakes are applied (braking distance: decelerated motion).

Answer 7

D

Question 8

____ is the shortest distance sufficient for a vehicle to turn-out of a traffic lane, pass another vehicle and then turn back to the same lane safely and comfortably without interfering the overtaken vehicle or an incoming vehicle traveling at the design speed should it come into view after the passing maneuver is started.

Answer 8

passing sight distance

Question 9

Distance traveled by the passing vehicle during the perception-reaction time.

Answer 9

d1

Question 10

Total distance the passing vehicle occupies the left lane.

Answer 10

d2

Question 11

Distance traveled by the incoming upon perception.

Answer 11

d4

Question 12

Distance between the passing vehicle at the end of its maneuver and the incoming vehicle (IV).

Answer 12

d3