Alan Mays' photos with the keyword: miles per hour

For the other side of this wheel chart , see the Keystone Automobile Club Safe Driving Calculator (below). "How Quickly Can You Stop? The average stopping distances in the Keystone Calculator are based on the average breaking distance plus the distance covered in ¾ of a second, which is the average 'reaction time,' the period which elapses between the instant danger is observed and the actual application of the brakes. . . . Keystone Automobile Club. The Motorist's Friend Since 1906."

For the other side of this wheel chart , see How Quickly Can You Stop? (below). "Keystone Automobile Club Safe Driving Calculator. Miles per hour: 55. Feet per second: 81. Average stopping distance: 271. See other side."