Mv act secs. 166 & 168

Whose is 80 and whose is 20?

According to traffic rules, it is the responsibility of the vehicle behind to maitain safe distance from the vehicle in front. Application of sudden brake cannot be termed negligence. There can be a variety of reasons for sudden braking. The reason for actual braking must be known if responsibility of the bus driver is to be determined. For instance if driver had stopped the bus suddenly to allow a bystander to get into the bus then the driver is clearly at fault.