SPEED- DENSITY RELATIONSHIP ON EXCLUSIVE MOTORCYCLE LANE CASE STUDY OF FEDERAL HIGHWAY ROUTE 2

In Malaysia, motorcycles represented more than half of all registered vehicle
population. In addition, motorcyclists contributed almost 70% of all injuries in
accidents and almost 60% of the fatal accidents that occurred on Malaysian roads.
This alarming figure warrants immediate road safety strategies targeted specifically at
motorcyclists. An effective engineering approach to tackle this problem is by
segregating these vulnerable road users from other motorized traffic through the
provision of an exclusive motorcycle lane. Motorcyclists are compelled by law to use
an exclusive motorcycle lane and other vehicles are prohibited by law from using it.
Prior to constructing an exclusive motorcycle lane, there is a need to understand the
parameters involved in capacity analysis used to assess the supply side, quality of
flow and also the design life of this facility. Therefore, this research presents a study
to analyse the traffic flow data that collected from the existing motorcycle track of
Federal Highway Route 2 by using the mathematical relationships such as
Greenshields' Model, Greenberg Model, Underwood Model and Drake et al. Model.
The resulting analysis can be used by engineering practitioners like traffic engineers
with a better understanding of motorcyclists' safety needs and incorporate these needs
in the upgrading and maintenance of existing roads and the planning, design and
construction of new roads. Result indicates that the Drake et al. Model is the most
suitable model because of the R-square is 0.7153. It is the highest value of R-square
from four other models used in this study