km/hBelgium
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128. km/h
km/h means kilometres per hour and is a unit used to measure speed. It expresses how many kilometres a vehicle or other moving object would travel in one hour if it maintained the same speed.
For example, a speed of 50 km/h means travelling at a rate of 50 kilometres per hour. Kilometres per hour are widely used for road speeds and speed limits in countries that use the metric system.
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Which speed unit is used on Belgian roads?
Belgium uses kilometres per hour (km/h) for road speeds and speed limits.
What does the number on a Belgian speed-limit sign mean?
The number on a C43 speed-limit sign indicates the maximum permitted speed in kilometres per hour. For example, a C43 sign displaying 50 means that drivers may not exceed 50 km/h.
Does a Belgian speed-limit sign have to display 'km/h'?
No. The number on a C43 sign is understood as a speed in kilometres per hour. Under the current Belgian Road Code, displaying the abbreviation 'km' on the sign is optional.

Traffic rules
Belgium