Gaimen50-question practice tests in the real exam formatThe centrifugal force acting on a car in a curve grows in direct proportion to its speed.
Answer: ✕ False
Explanation
Centrifugal force increases with the square of speed. At twice the speed it becomes 4 times as strong — not a simple proportion.
More questions on “Speed limits”
- Stopping distance means the distance the car travels from the moment the brakes start to work until it comes to a stop.
- On a road wet with rain and with worn tires, both the free running (reaction) distance and the braking distance become at least twice as long.
- On rainy days, visibility is poor and the braking distance is longer, so it is good practice to keep about twice the following distance you would keep on a clear day.
- On snowy or icy roads, it is good practice to keep a following distance about 3 times what you would keep on a clear day.
- A steep uphill slope is a place where you must slow down (to a speed at which the vehicle can stop immediately).
- Near a bend in the road, you must drive slowly enough to stop immediately, even when you have a clear view.
Questions and explanations are written against Japan’s Road Traffic Act and the National Police Agency’s Rules of the Road. These are not official exam questions.