safety distance वाक्य

The aim is to have the cars helping to avoid traffic congestion, by reducing the safety distance between the cars ( from 2 seconds drive distance now to just 0, 5 seconds ) and avoiding sudden traffic slow-downs ( due to manoeuvres undertaken by drivers ).
Setup of mortars in Canada for an oblong firing site require that a mortar be configured at an angle of 10 to 15 degrees down-range with a safety distance of at least 200 meters down-range and 100 meters surrounding the mortars, plus distance adjustments for wind speed and direction.