The Sustainable Urban Form and Transport Energy Consumption
Mohammed, General Traffic Administration, Ian, ARRB Group
This paper aims to investigate the relationship between urban form and transport in reducing travel-related energy consumption and greenhouse gas.
This paper aims to investigate the relationship between urban form and transport in reducing travel-related energy consumption and greenhouse gas. Riyadh City is experiencing transport problems in particular it has been observed that there is an increasing trend in travel time and distance. It is expected that with Riyadh;s monocentric urban form, this trend will only worsen. This study will test the impact of a shift from a monocentric structure to polycentric structure, specifically focusing on developing a better understanding of how the urban structure impacts on road congestion and greenhouse gas emissions. A model was developed and calibrated to Riyadh conditions and used for scenario analysis. This model included two parts: a spatial model and a transport model. The scenario analysis included variations of residential and activity distribution, as well as conditions of public transport service. The spatial and transport models were analyzed various scenarios of demographics, socioeconomics, population and employment densities, housing systems and transport systems. Four scenarios were set for the scale and distribution of activity and residential areas. Scenario 0 exhibits a monocentric structure (the existing structure) without any change in the current structure and network. Scenario 1, 2, 3 have polycentric structures with variations in the redistribution of employment and residences, as follows: scenario 1 has five new-sub-centers with a redistribution of residences around the new sub-centers, while employment remains concentrated in the CBD. Scenario 2 has five new sub-centers with a redistribution of employment around the new sub-centers while residences as where they are at present. Scenario 3 has five new-centers with a redistribution of both population and employment around the new sub-centers. The analysis showed that under certain conditions, the shift to a monocentric urban structure resulted in reduction in travel-related energy consumption and greenhouse gas.
Association for European Transport