Stopping distance explained
Overall stopping distance = when you think and brake together
mph = miles per hour
20 mph = 12 meters (40 feet)
30 mph = 23 meters (75 feet)
40 mph = 36 meters (120 feet)
50 mph = 53 meters (175 feet)
60 mph = 73 meters (240 feet)
70 mph = 96 meters (315 feet)
In WET condition braking distance is DOUBLED
In icy (snow) conditions braking distance is MULTIPLIED BY TEN