Currently, fuel consumption of the vehicle rising day by day as a result of increased trip lengths, self-mode transportation and the number of an intersection. Transport is a crucial infrastructure for the development and hence vehicular growth closely follows the trend of urbanization. Several international study and multinational institutions worldwide progress in decarbonizing transport emission from economic growth. When the vehicle waiting for the turn to cross the intersection at the signal, most of the drivers keep the engine off of their vehicle and result in large emission and fuel consumption. This small quantity of fuel worn out aggregated over a number of cycles per day number of the cycle per year and number of intersection result in the massive quantity of fuel. Measuring delay is important in computing the level of service provides to road user at a signal intersection. In India mainly two methods were used to estimate control delay those are field measurement and the artificial measurement. Field measurement of control delay includes the use of test car observation, path tracing of individual vehicles and the recording of arrival and departure volume of the intersection but this expensive for long period. An analytical model of traffic system structure deals with the macroscopic method to study delay measurement. In this paper, the comparison of the actual idling fuel use and emissions with those for restarting by following the ECE-15 cycle and EUDC cycle has been done. This work gives the answer of the question that is how long can you idle in a queue before impacts from idling are greater than they are restarting by considering both the fuel use and emission. This work represents the emission and fuel use are greater for idling over 13 seconds. And also found that the best fuel economy speed is 60 km/hr because the fuel consumption and instantaneous emissions are minimum at 60 km/hr speed.