Hired tipper of the contracting company entered the T junction on the graded road without fully stopping at the STOP sign. Driver of the heavy bus (hired by another contractor) travelling on the main graded road with 11 passengers took evasive action to avoid collision with the Tipper. However the accident could not be prevented as the Tipper took immediate left turn to enter branch road without checking in the side mirror. This resulted in minor damages to both the vehicles. Drivers and passengers escaped unhurt.