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# How do you calculate stopping distance at 40mph?

## How do you calculate stopping distance at 40mph?

Answer: Overall stopping distance at 40mph is 40 x 3 feet = 120 feet. 120 feet is approximately equal to 120 * (3/10) metres = (120/10)*3 metres = 12*3 metres = 36 metres.

## What is the minimum stopping distance on a wet road?

Explantion: The total minimum stopping distance of a vehicle depends on four things; perception time, reaction time, the vehicles reaction time and the vehicle braking capability. The recommend minimum stopping distance of a car driving at 50 km/h under wet conditions is 36 metres.

How much longer does it take to stop on wet roads?

Keep your distance from the car ahead It takes approximately three times longer to brake on wet roads than it does on dry roads. As more distance is required to brake, it is important not to tailgate. Keep more than two car lengths between you and the vehicle in front of you.

### What happens to the stopping distance when a road gets wet?

Stopping distances in rain When the road is wet, your tyres don’t have as much grip on the road surface. Your stopping distance, therefore, will be double what it is in normal driving conditions. Reduce your speed appropriately considering the weather conditions and road that you’re driving on.

### What is a safe stopping distance for a car at 50 kmph?

Stopping distance explained

Speed Reaction distance Total stopping distance
40km/h 17m 26m
50km/h 21m 35m
60km/h 25m 45m
70km/h 29m 56m

What is the normal stopping distance at 100km/h on a wet road?

What is the normal stopping distance of a car or motorcycle travelling at 100km/h on a wet road? Correct Answer: 122 metres.

#### How do you stop on a wet road?

Explanation: As you drive, look well ahead and all around so that you’re ready for any hazards that might develop. If you have to stop in an emergency, react as soon as you can while keeping control of the vehicle. Keep both hands on the steering wheel so you can control the vehicle’s direction of travel.

#### How much does stopping distance increase in wet conditions?

Travelling in the same conditions at the same speed, a car with tyres with 3mm of tread will take 35 metres to come to a halt. When the tread is 1.6mm, the stopping distance increases to 43 metres. Secondly, when the road is wet your stopping distance?

How to Know Your stopping distance at different speeds?

Stopping distances at different speeds Speed Thinking + braking distance Stopping distance 20mph 6m + 6m 12m (40 feet) 30mph 9m + 14m 23m (75 feet) 40mph 12m + 24m 36m (118 feet) 50mph 15m + 38m 53m (174 feet)

## How many car lengths does it take to stop at 20mph?

The stopping distance at 20mph is around 3 car lengths. At 50mph it’s around 13 car lengths. If you’re travelling at 70mph, the stopping distance will be more like 24 car lengths.

## How long is the stopping distance on a dry road?

Stopping distances on a dry road Speed Reaction distance Braking distance Total stopping distance 40km/h 17m 9m 26m 50km/h 21m 14m 35m 60km/h 25m 20m 45m 70km/h 29m 27m 56m