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.
