most people who live in the countryside think that people living in a big city have very comfortable lives. countries people have no problems about traveling around their places while people in big cities have inevitable traffic jams. big cities are very crowded with people and busy traffic almost everywhere in downtown.motor vehicle collisions can be seen regularly as a component of city life. Most vehicle collisions cause lots of damage. Every year, the number of deaths,injuries,and probably damage increases rather than decrease, the governments of many countries have stressed the road safety that aims to reduce the harm resulting from motor vehicle collisions. harm from road accidents is greater than that from all other transportation modes (air,sea,space,etc.)combined .
the road traffic safety deals exclusively with road traffic crashes to reduce their number and their consequences . A road traffic crash is an Event involving a road vehicle that results in harm. however, only the road safety facilities could not help reduce the number of crashes unless pedestrians or all road users comply strictly with traffic rules. to help reduce the number of crashes people in the societies should know traffic rules and follow the rules strictly.