The Importance Of Rollover Accidents

Buses are the most common and widely used means of transportation everywhere in the world Millions of people travel by bus everyday, which increases the necessity to manufacture the bus bodies that are safe to travel in. Rollover accidents are responsible for many fatalities involving Bus accidents. It is one of the most crucial hazards for safety of occupant which include driver as well as passenger. In India, the general trend noticed in the market is that OEMs sell their drive away chassis. The body design and building is done by private Body Builders. Many Body Builders unknowingly employ poor designs, resulting in large amounts of fatal accidents, mostly roll-over. The existing bus body structures are hardly design optimal and safe. Wood

A “serious rollover” occurs when the vehicle flips more than two times. Lastly, a combined rollover involves two different dangers; for example, a head on collision leads to rollover or a rollover that ends the bus in a lake. The most typical collision configurations involving buses and coaches are side, rear, frontal and rollover. Although rollover crashes are not common, the number of seriously injured occupants was high as compared to other crash types, however, the research and interest related on its safety seemed relatively low. Strengthening bus frame maintain residual space (occupant space) and minimizing occupant injury are necessary. AIS 031/ECE R66 regulation deals with the study of bus roll over excluding for driver and co space as per AIS 031regulation. Also, a rollover can cause up to five rotations to occur on the road. A “serious rollover” occurs when the vehicle flips more than two times. In most parts of the world, especially Europe, safety requirements are continuously visited to improve passenger safety in buses or coaches. Since there are many wounded passenger in accidents of buses, more careful analysis and simulation for impact accidents should

According to the statistics of FARS, shown in figure 1, 32% fatal crashes are rollover crashes. Due to this rollover analysis and its prevention has become the research topic in the recent years. Rollover accidents are dependent on the vehicle's stability during turns. The stability is influenced by the height of centre of gravity and the track width. A high centre of gravity and narrow track can make a vehicle unstable while taking turns at high speeds resulting in rollover accident. A vehicle may rollover due to reasons such as excessive cornering speed, tripping, collision with another vehicle or object, sharp changes in direction at high speed etc