Abstract:
Modeling acceleration characteristics of vehicles is one of the important aspect in traffic
engineering which has a significant impact on various design elements such as Length of
acceleration lanes, ramp way design, vehicular emission and fuel consumption models, etc.
Most of the acceleration models in the literature have been developed for passenger car but
vehicles differ in performance to accelerate due to their varying physical dimensions and
dynamic characteristics. Motorized three-wheeler is one of the most commonly found vehicle
type in developing countries like India, which is used as an Intermediate public transport. The
entire acceleration process of the motorized three wheelers have been captured using a GPS
based performance box at near free flow conditions. Acceleration rates of the motorized three
wheelers were found higher at lower speeds and lower at higher speeds and the maximum
acceleration was in range of 1.88 m/s2 to 2.08 m/s*1. This study has proposed an exponential
model to describe the acceleration behaviour of a motorized three-wheeler. The application of
the developed model can help in better traffic operation and management and will yield
realistic vehicle behavior in simulations, when used in micro-simulation software’s.
