Stopping Distances Flashcards
20 mph
Reaction: 6 metres
Stopping: 6 metres
Total: 12 metres
What is the average person’s reaction time?
0.7 seconds
30 mph
Reaction: 9 metres
Stopping: 14 metres
Total: 23 metres
40 mph
Reaction: 12 metres
Stopping: 24 metres
Total: 36 metres
50 mph
Reaction: 15 metres
Stopping: 38 metres
Total: 53 metres
60 mph
Reaction: 18 metres
Stopping: 55 metres
Total: 73 metres
70 mph
Reaction: 21 metres
Stopping: 75 metres
Total: 96 metres
What + what = stopping distance?
Thinking distance + braking distance = stopping distance
Braking distance is the distance … braking
Braking distance is the distance needed for braking
Actual braking distance depends on conditions and circumstances
What are the 4 steps to processing complex info?
Input - Decision making - output (action) - feedback
Reaction time = what + what?
Reaction time = decision time + response time
(Decision time is observing the hazard and deciding what to do)
(Response time is the time to start the physical response)
The purpose of a driving plan is to put you:
- in the correct position
- at the correct speed
- with the correct gear engaged
- at the correct time
to negotiate hazards safely and efficiently
A driving plan is a continuous process to negotiate hazards and is made up of what 5 steps?
Observe Anticipate Prioritise Decide what to do Act
Can you enter hatched markings with single broken boundary lines?
Yes, if it is safe to do so
What are the benefits of the 2 second following position?
See (you have a good view and can increase on either side by slight change of position)
Stop ( you can stop your vehicle safely if the driver in front brakes firmly without warning)
Stop (you can extend your braking distance so the driver behind has more time to react)
Go (you can see when it’s safe to move into the overtake position)
Spray (in wet weather there’s less spray from vehicle in front)
