mph, the car travels 44 feet before the driver can
react to danger and move his foot to the brake pedal.
But at 60 mph (1 l/2 times the previous speed: the car
travels 66 feet (2 times the previous distance).
Following Too Closely.
collisions are caused by following too closely; this
action is one of the four major causes of accidents. As
shown above, the distance required to stop a car
increases greatly as speed is increased. A guide for
estimating safe distance when following another
vehicle, at least at the lower speeds, is: Allow at least
1 second for every 10 feet of vehicle length. This is 2
seconds for the average car. Pick a point on the road,
or along side of the road. When the rear of the vehicle
ahead passes this point, start counting; 1001, 1002,
1003, etc., until the front of your vehicle is at the
same point. The higher the speed, the greater the
interval becomes for the same count (Figure 21). The
d a n g e r of rear-end collisions can be reduced by
decreasing your speed, allowing sufficient space
between your car and those ahead, and giving proper
signals. The injuries to passengers and driver that
result from such collisions can also be reduced by
consistent use of seat belts.
9.14 PARKING. The following procedures are basic
operating guides for parking vehicles under both
normal and emergency conditions.
Parallel Parking. Most metropolitan areas
require parallel parking. To park efficiently, the
initial position in which the parking vehicle pulls up
parallel with the car ahead (Figure 22) is important.
Avoid parking with curb-side wheels against the curb,