Stopping Distance = 15 feet
Stopping Distance = about 315 feet at 70 mph
Stopping distance at 30mph = 23m
Stopping distance at 40mph = 36m
Stopping Distance = about 146.25 feet.
At 20 mph, the average thinking distance is around 20 feet, while the braking distance is approximately 20 feet as well. Therefore, the overall stopping distance for a vehicle traveling at 20 mph would be around 40 feet.
Best to drop at least 10 MPH as your stopping distance has increased significantly.
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.
The stopping distance at 55 mph varies based on factors like vehicle type, road conditions, and braking efficiency. On average, it takes about stopping distance of stopping distance of 200-250 feet to come to a complete stop, which includes both the reaction distance (the distance traveled while the driver reacts) and the braking distance. If you consider a reaction time of about 1.5 seconds, this adds roughly 120 feet to the total stopping distance.
23 meters on a dry pavement.
3 meaters
A good rule of thumb is to take the mph times itself, ( mph x mph) and then divide by 10 to get the approximate distance in feet to stop any normally maintained vehicle. Individual results vary of course.
You should not be travelling on a pavement at 70 mph!