Adequate Following Intervals (Continued)

The graphic above shows that someone traveling at 65 miles per hour will take about 6.2 seconds and 400 feet to stop (given a common perception/reaction time of 2 seconds and hard braking).

It is important to note that many passenger car tires are not designed to steer out of problem areas at speeds beyond 75 mph. At these speeds, high speed rated tires are required due to sidewall flexion and turning movements.