限速每小时 meaning in Chinese

speed limit of 48kmh

The speed limit is 40 miles an hour. do n't exceed this maximum .
限速每小时四十英里，不要超过这个极限。
Speed limit of 48kmh
限速每小时48公里
Sweden ' s daily dagens nyheter scared thousands of bicyclists by claiming that stockholm ' s city government would impose speed limits of 12 mph on bikes in the inner city
瑞典每日新闻报报道，斯德哥尔摩市政府规定脚踏车在城内限速每小时12英里，这着实把许多骑自行车的人吓了一跳。
The railway track adjustment was planned to be carried out from 10 : 00 pm on wednesday to 1 : 30 am on thursday and the trains passing by were asked to slow down their speed to 45 kilometers per hour from 9 : 00 pm
当时周三22时至次日1时30分要进行铁路线路的调整，经过的列车从当日21时起施工范围内列车限速每小时45公里运行。