Week 2

Question 1

List a few Driver characteristics. What is the goal when trying to ensure safety for all driver characteristics? Can we just use average values of all drivers?

Answer 1

• varying abilities to hear, see, evaluate, react to info
• the same individual might have varying abilities depending on different conditions (impairment, fatigue, time of day, weather)

Question 2

What is the goal when trying to ensure safety for all driver characteristics? Can we just use average values of all drivers?

Answer 2

• goal is to accomadate abilities of as many drivers with REASONABLE cost
• thus, we can’t just use the average values

Question 3

4 Human response processes

Answer 3

1. peripheral vision
2. color vision
3. glare recovery
4. depth perception

Question 4

PIEV reception reaction process

Answer 4

P - perception; seeing any object on the road
I - identifying object
E - Emotion; deciding what action to take in response to I
V-volition (reaction) - execution of the action

Question 5

Vehicle Characteristics

Answer 5

Static - weight and size
Kinematic - motion (not considering forces that caused the motion)
Dynamic - forces that caused the motion of vehicle

Question 6

What is a design vehicle?

Answer 6

-designing a road/highway based on the characteristics of a design vehicle that will encompass the traits of nearly all cars that go on that road

Question 7

Road design parameters (3).

Answer 7

1) Stopping Sight distance
=PIEV distance + Braking distance
-shorter on upgrades, longer on downgradse (look at +/- G)
2) Decision sight distance
-longer stopping sight distance, required when a stimulus is unexpected or when driver makes unusual maneouvres

3) Passing sigh distance
- minimal sight distance required on a two lane that will permit a driver to complete a passing manoeuvre without cutting off the other drive and without colliding with an opposing vehicle