The Study of Trace Distance from the Movement after Braking of the Public Car with over Seven Seats

Abstract

            This research aims to study the distance of the wheel traces that happened from the movement after braking of a public car with over seven seats. The authors wanted to know that how the car itself, excluding the load and the car including 700 kilograms of the load, running on the road with the concrete surface and asphalt surface at 60 and 80 kilometers per hour, can affect the distance of traces that happened from the movement after braking. The test was set up and it was repeated three times to get the average. The data and information obtained from the tests were collected and analyze in order to compare the relationship between the variables defined above.
            The research found that:
1. The trace distance that happened from the movement after braking of a public car over seven seats can be analyzed by using scientific principles and statistics to prove a speed range from such trace distance.
2. The trace distances that happened from the movement after braking of a public car over seven seats were different according to the speed rate and the type of the road surface. It is found that increasing of the speed rate would have a longer braking distances and on the concrete road surface will have less braking distance on the asphalt road surfaces.
3. The speed rate and nature of the road surface affect the trace distance that happened from the movement after braking of a public car over seven seats significantly.
               In conclusion, the test speed and the road surface are related with the braking distance significantly. However, if the experiment was done with other variables such as the characteristics of the tires, the capacity of the break, the test results might be clearer by increasing variables.