Construction speed of dowty retarder

The construction speed is the maximum speed that the dowty retarder structure allows the vehicle to pass through. According to the original standard: "the construction speed of various dowty retarder shall not be less than 25 km / h.

This regulation has two meanings: first, any dowty retarder must meet the requirements of 25km / h in structure and strength -- the minimum construction speed, that is, when the vehicle repeatedly rolls the dowty retarder at a speed within 25km / h, the strength of all parts of the dowty retarder shall not be damaged; Second, when the construction speed of the dowty retarder is determined, such as 25km / h, the speed of the vehicle passing through the retarder cannot exceed this speed, otherwise it will cause damage to the dowty retarder.