Stopping distance mostly depends on various factors
1.Width of tyres.
2.Road friction and wetness.
3.weight of your vehicle.
For safe driving a minimum of 52metres or more is considerable.
200 feet
53 metres/ 175 feet
243 feet
Stopping Distance = about 315 feet at 70 mph
Stopping distance at 30mph = 23m
Stopping Distance = 15 feet
Stopping Distance = about 146.25 feet.
Stopping distance at 40mph = 36m
Stopping Distance = about 75 feet.
The distance to stop depends upon a lot of factors, eg:type of road surfacecondition of tyresstate of road surface (icy, dusty, wet, dry, etc)effectiveness of brakesThe stopping distance given in the Highway Code is based on assumptions that have not changed even though brakes, etc have improved. They are calculated as distance to stop in ft = (speed in mph)² ÷ 20For 50 mph the physical stopping distance is 50² ÷ 20 = 125 ftThe Highway Code gives the emergency stopping distance as this distance plus the thinking distance which is given as 1 ft per mph which at 50 mph is 50 ftThese distances are converted to metres:Emergency stopping distance = thinking distance + physical stopping distance= 50 ft + 125 ft = 175 ft≈ 15 m + 38 m ≈ 53 mThis is the shortest distance based on good brakes, good tyres, dry road. For worn tyres, wet or icy roads, etc increase the distance by a factor of 2, 5, 10 etc.
When traveling 30-mph, the braking distance is 45-feet, and the total stopping distance is 75-feet. This is the length of a semi-truck and trailer.
Depends entirely on the size of the vehicle. The average stopping distance for a vehicle is around 160 feet. That includes 51 feet you will travel during your reaction time. And 109 feet braking distance.