Theory test
You are passing a 14-metre long bus on a sunny day in May. Just as you pass the rear of the bus, a child runs out in front of the bus. What is the maximum speed that would allow you to stop in time, if you react within 1 second?
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First, consider the calculations of stopping distance, reaction distance and breaking distance.
A “sunny day in May” = assume that the condition of the road is normal/good.
You must try the different options. 70 km/h feels like it is too fast. 30 km/h seems more reasonable. Try 30 km/h first:
Reaction distance:
- remove the zero in the speed * reaction time * 3
- 3 * 1 * 3 = rounded to 9 metres
Braking distance:
- remove the zero in the speed * remove the zero in the speed * 0.4
- 3 * 3 * 0.4 = 3.6 metres
Stopping distance:
- reaction distance + braking distance
- 9 + 3.6 = 12.6 metres
| Speed | Stopping distance |
| 70 km/h | 40.6 metres |
| 50 km/h | 25 metres |
| 30 km/h | 12.6 metres (closest to 14 metres) |
| 20 km/h | 7.6 metres |
This is an example of one of the driving theory questions at Körtkortonline.se. There are two languages: English (free driving licence test), Swedish (free driving licence test)
More examples of theory questions:
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Category:
- Theory test: Vehicle
- Theory test: Environment
- Theory test: Traffic safety
- Theory test: Traffic regulations
- Theory test: Individual circumstances
- Theory test: Road signs
