Journal
JOURNAL OF URBAN PLANNING AND DEVELOPMENT
Volume 146, Issue 3, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)UP.1943-5444.0000580
Keywords
Urban planning; Traffic performance; Block size; Dynamic traffic assignment; Superblocks; Open blocks
Funding
- Tamkeen under the NYUAD Research Institute Award [CG001]
- Swiss Re Institute under the Quantum Cities(TM) initiative
- NYUAD Center for Interacting Urban Networks (CITIES)
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This paper investigates how block size influences traffic by dividing the travel distance, time, and number of turning maneuvers into two parts: the one that happens inside the block, and the one outside. We develop analytical formulations that yield representative values of the three aforementioned indicators under low-demand scenarios. A VISSIM simulation with a dynamic traffic assignment is used to verify such values, study the traffic behavior for high-demand scenarios, and evaluate the traffic performance, network capacity, and resiliency. The results indicate that traffic inside the block plays a more important role on the overall performance in networks with larger block size and/or short trips. In addition, smaller block-size networks yield shorter travel distance and better travel accessibility, as well as higher network capacity; whereas larger block-size networks have shorter travel time and smaller number of turnings under low-demand levels. In the congested situation, the larger block-size networks show relatively better performance as they take longer to become congested and gridlocked.
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