In 2004, women's life expectancy exceeded men's life expectancy by 5.2 years, the smallest gender gap in life expectancy since 1946. Life expectancy for whites was five years greater than that of blacks. Life expectancy for black and white men and women was as follows: 1  Black male: 69.8 years.  White male: 75.7 years.
But, that's not always the case. Safe following distances vary according to traffic speed and weather conditions and according to the type of vehicle you're driving. In good conditions, you should allow 2 seconds between your car and the vehicle in front of you. Here's an easy way to work that out.
The following table comes from data originally published in. and. magazines 1. Stopping distances are for new cars (1991-1995). The values of stopping distances (from 60 mi/h = 97 km/h = 27 m/s) for 55 vehicles ranged from 114 ft (35 m) to 179 ft (55 m) with an average of 140 ft (43 m).Vehicle. Stopping Distance. from 60 mi/hr (97 km/h).he following table comes from data originally published in. and. magazines 1. Stopping distances are for new cars (1991-1995). The values of stopping distances (from 60 mi/h = 97 km/h = 27 m/s) for 55 vehicles ranged from 114 ft (35 m) to 179 ft (55 m) with an average of 140 ft (43 m).