AN AUTOMATED BRAKING SYSTEM FOR ACCIDENT PREVENTION IN LIGHT PASSENGER VEHICLE

Abstract

Reducing the number and worthiness of traffic accidents is a declared target and policy of most governments. It is clearly stated the traffic accident worthiness and their main cases in Ethiopia. Since dependence on driver reaction is the main cause of road accidents, it would be advisable to replace the human factor in some driving related tasks with automated solutions. To automate a vehicle, it is necessary to control the actuators of a car, i.e., the steering wheel, accelerator, and brake. The design and implementation of an automated braking system has been conducted with a component of a solenoid, intelligent LiDAR automotive based sensors, buzzer and LED light driver warning components, allowing the microcontroller to execute the preloaded well programmed code to stop the car as per the programmed stopping distance. It is assembled in conjunction with the original hydraulic brake system circuit for the sake of robustness and to permit the two systems to halt the car independently. This system is proposed and developed for light passenger vehicle TOYOTA HIACE Commuter 2007 four speed automatic transmission. Implementing and usage of this automated braking system have reduced the vehicles stopping distance from 143.524m to 113.577m with vehicles highest speed and maximum load it can experience. It observed that the new automated braking system reduced the stopping distance of the vehicle by 30m at maximum speed (152km/h) and maximum vehicle load (3905kg) compared to the existing conventional hydraulic braking system. As a result, this thesis contributes to efforts of increasing road safety and minimizing collision by reducing stopping distance of light passenger vehicle. It also reduces the enormous human lives lost and massive destructions of countries property presently around 24.42%. This study also provides a new theoretical and analytical basis for design and application of an automated braking system.