Some could be maybe driving without knowing the quantity of meters that a certain speed in kilometers per hour allows, each second. Knowing that the human reaction time could be set about an average of 0.25 seconds, and adding the time to the muscular reaction, usually a total of 0.75 seconds rounding to high, this data leads to an optimum meters per second rate for improving security near a dangerous zone.
100 kilometers per hour = 27.78 meters per second
50 kilometers per hour = 13.89 meters per second
If a vehicle is moving through a lane, approaching an intersection, this data leads to an optimum meters per second rate for improving security. The driver could make an estimation of the distance to the intersection. Setting the distance in 50 meters, at 50 kilometers per hour, the available time to decide would be 3.59, from dividing 50 between 13.89 meters per second.
At 25 kilometers per hour, the time is multiplied by two, so more than seven seconds.
30 kilometers per hour = 8.34 meters per second
20 kilometers per hour = 5.56 meters per second
10 kilometers per hour = 2.78 meters per second
Rounding or say simplification normally helps to remember things better, so 20 kilometers per hour about 5 meters each second. With 100 km/h, about 25 meters each second. Which is the speed in kilometers per hour divided by four.
So, quickly now, tell to yourself how many meters a vehicle advances at 60 km/h, each second. The fast answer is 15 meters, and the accurate measure is 16.68. Not bad!