抄録
The actual NOx emission at roadside in a narrow street was clarified by no-board measurement system. The factors that caused an intensive NOx pollution were analyzed, considering road infrastructures, traffic conditions, driver's operations and NOx emission pr running distance. As the results, it was found that obstacles such as utility poles, parking cars, poor visibility for driver, stops in an intersection, which lead to deceleration and acceleration of a vehicle caused intensive NOx pollution in a narrow street.
