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Oregon driving lesson · Space Cushion & Passing

Side and Rear Space, Backing and Stopping Distances

A 3-minute lesson from the Oregon course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Space Cushion & Passing
Checkpoint questions
6
Source pages
36, 37

Space beside and behind you matters too: it gives you room to dodge a drifting car and keeps tailgaters from hitting you. And stopping always takes longer than you think — at highway speed, longer than a football field.

Keep a side space cushion:

  • Beside other vehicles on multilane streets, drop back or move ahead — someone may crowd your lane
  • Keep as much space as possible from oncoming vehicles; the center of your lane is usually safest
  • Make room for vehicles entering freeways — move over a lane if no one is next to you
  • Help drivers signaling a lane change by slowing down or speeding up a little
  • Move away from parked cars without leaving your lane — doors open and people step out
Handbook p. 36 ↗

Know the rule

To keep drivers behind you at a safe distance, hold a steady speed and signal early by gently pressing the brake when you need to slow or stop.

Handbook p. 36 ↗

Know the rule

If someone tailgates and there's a right lane, move over. If you can't, slowly reduce speed to encourage them to pass. Never brake hard to discourage tailgating — you could be hit from behind.

Handbook p. 37 ↗

Know the rule

A common backing mistake is failing to look both ways behind you. Mirrors don't give a full view: turn your body and head to the right and look through the rear window, glance to either side for pedestrians and traffic, then back up slowly.

Handbook p. 37 ↗

Stopping distance depends on:

  • Road and weather conditions
  • The weight of your vehicle
  • Your reaction time
  • Your vehicle's braking ability
Handbook p. 37 ↗

Distance to stop (hazard seen to full stop)

Distance to stop (hazard seen to full stop)
SpeedStopping distance
20 mph69 feet
30 mph123 feet
40 mph189 feet
50 mph268 feet
60 mph359 feet
Handbook p. 37 ↗

Know the rule

The faster you drive, the greater your stopping distance, even in ideal conditions. At 60 mph, the distance from spotting a hazard to a full stop is greater than the length of a football field.

Handbook p. 37 ↗

Put it into practice

A car rides your bumper on a two-lane road with no right lane. Don't tap-brake or slam on the brakes. Gradually ease off your speed so the driver passes or backs off.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

At 60 mph, the total distance needed to recognize a hazard, brake, and stop is:
  1. About half a football field
  2. About 120 feet
  3. About 70 feet
  4. Longer than a football field

Answer: Longer than a football field

At 60 mph, total stopping distance exceeds a football field's length.

Handbook p. 37 ↗
Which of these does NOT directly affect your stopping distance, according to the handbook?
  1. The color of your vehicle
  2. The weight of your vehicle
  3. Road and weather conditions
  4. Your reaction time

Answer: The color of your vehicle

Vehicle color has no bearing on stopping distance.

Handbook p. 37 ↗
A common mistake drivers make when backing up is:
  1. Relying only on the backup camera
  2. Failing to look both ways behind them
  3. Using their mirrors too much
  4. Turning the steering wheel too early

Answer: Failing to look both ways behind them

The handbook names failing to look both ways behind you as a mistake drivers make when backing; mirrors don't give a full view.

Handbook p. 37 ↗
According to the handbook's stopping-distance chart, about how far does it take to stop from 40 mph?
  1. 123 feet
  2. 268 feet
  3. 189 feet
  4. 69 feet

Answer: 189 feet

The chart shows about 69 feet at 20 mph, 123 at 30, 189 at 40, 268 at 50 and 359 at 60 mph.

Handbook p. 37 ↗
As your speed increases, your stopping distance:
  1. Stays the same regardless of speed
  2. Increases, even under ideal conditions
  3. Decreases, since brakes grip better at speed
  4. Only increases in bad weather

Answer: Increases, even under ideal conditions

Faster speeds always increase stopping distance.

Handbook p. 37 ↗
Using your mirrors alone gives you a complete view when backing up.
  1. True
  2. False

Answer: False

Mirrors alone do not provide a full view; you must also look back.

Handbook p. 37 ↗
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