Closely spaced or irregularly spaced traffic signals on suburban and urban arterials result in an excessive number of stops, unnecessary delay, increased fuel consumption, excessive vehicular emissions, and high crash rates. Conversely, long and uniform signal spacing permits timing plans that can efficiently accommodate varying traffic conditions during peak and off-peak periods, as well as implementation of signal timing plans as traffic changes occur over time. Therefore, selecting a long and uniform signalized intersection spacing is the first essential element in establishing access spacing standards.
Traffic signal systems need to provide efficient traffic flow as traffic conditions vary between peak and off-peak periods throughout the day and change over a long period of time. + Read more