Effective Area Parameters

Vehicle equivalency factors are required to convert a heterogeneous traffic stream, such as in developing countries like India (urban areas), into an equivalent homogeneous traffic stream to calculate roadway capacity and plot speed-flow relations.

Furthermore, this data was acquired with the help of SEV software (as described in Minh et al. 2005); videography method was adopted to record video of the selected road sections, which was analysed in the SEV software. It must be noted that the selected sites were in Ahmedabad city of Gujarat state in India; however, the accuracy of the final equivalency factors can be increased with addition of more samples. (An illustrative figure is also provided to derive an idea as to how this data-set can be interpreted to calculate effective area.)