速そく度ど規き制せい

noun

speed limit; speed regulation

Refers to official rules or technical measures that control the maximum speed of vehicles, often used in traffic contexts.

• この道どう路ろの速そく度ど規き制せいは時じ速そく40キロです。

  The speed limit on this road is 40 km/h.

• 新あたらしい速そく度ど規き制せいが来らい月げつから施し行こうされる。

  The new speed regulation will come into effect next month.