Increasing vehicular growth requires adequate transportation facilities. For designing any road facility speed-flow relation is essential to get required designing speed. As urban roads carries different types of vehicles having different dimensions, shape, speed etc. Two arterial roads of Jamnagar city are selected for data collection. Traffic composition affects traffic flow parameters. In this paper speed-flow curves are plotted using collected field data from peak and non-peak hour. Space mean speed and classified volume counts are used for speed-flow relation.