Gaimen50-question practice tests in the real exam formatA sign showing the number 30 with a line under it means you must not drive faster than 30 km/h.
Answer: ✕ False
Explanation
A number with a line under it is the Minimum Speed sign: it prohibits driving slower than that speed. A number without the underline shows the maximum speed — the exact opposite meaning.
More questions on “Road signs”
- Even small special motor vehicles, motorized bicycles (mopeds), and light vehicles must not drive in a lane reserved exclusively for route buses (bus-only lane).
- A priority lane for route buses means the same as a bus-only lane, so regular cars must not drive in it.
- The Pedestrian Crossing sign is an instruction sign showing a pedestrian in white on a blue background.
- If a Closed to Vehicles sign has an auxiliary plate reading 'except mopeds,' motorized bicycles (mopeds) still cannot use the road.
- The main road signs come in four types: regulatory signs, instruction signs, warning signs, and guide signs.
- Where the road marking 'No Stopping Zone' framed in yellow is painted, you must not enter that area to drive through it.
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.