THE EFFECT OF ROAD HUMPS AND RAISED CROSSWALKS ON VEIDCLES SPEED

At Universiti Teknologi PETRONAS, speeding is one of the most common
traffic offences by the students. A few traffic calming measures such as road
humps and raised crosswalks were implemented with the purpose to reduce
the speeding offence in the university. However, the effectiveness of the
implementation is never been studied. This project will evaluate the
feasibility of these structures in detail. Data collection was the first step
conducted using questionnaires to obtain feedback from the users on the
effectiveness of using the existing traffic calming structures. In
reconnaissance survey, locations of selected road humps and raised
crosswalks were determined. In data gathering process, dimension of the
existing structures were measured using recommended method to determine
whether the design met the standard specifications. The most important part
was determining the speed of the moving vehicles using radar gun. Series of
data on speeds of the vehicles were used to construct the speed profiles. The
results show that at some of the locations of the study, the traffic calming
measures could not effectively reduce the speed of vehicles and exceeded the
speed limit of the campus. Therefore, modifications on the design of the
structures in terms of dimension are proposed to meet the design
specifications. There are also recommendations to introduce other traffic
calming structures that are having the potential in reducing the speed of
vehicles.