How many meters per second at 120 km/h?

[DiAaron]

A speed of 120 mph can travel 33.3m per second. 120 mph is 120 km/h, and one hour is sixty minutes, which works out to two kilometers per minute, so 120 mph can travel 33.3m per second. The speed of 120 km/h should be driven on the highway, ordinary national roads do not allow driving so fast. The reason why it is limited to 120 km/h is set according to China's road design standards! The road surface friction coefficient, the strength of the guardrail, the width of the lane, the slope, the radius of curvature, and the size of the signs are all designed according to the 120 km/h standard. If the road speed is rashly increased, all related designs will have to be revised, and the existing highways will face reconstruction, which is very costly. When the speed exceeds 120 km/h, human vision declines and the field of vision narrows. Of course, due to the body's self-adaptation, the driver often does not feel particularly obvious. According to tests, at a speed of 70 km/h, normal vision of 1.2 drops to 0.7, and at a speed of 100 km/h, the field of vision is only 45 degrees. In this case, the accident rate will increase.