Presenting a Solution for Sustainable Control of Natural Gas Usage in the Fuel Fleet of Urban Taxis With a System Dynamics Strategy

Despite the presence of 90% of double-fuel taxis (gasoline + CNG) in the urban taxi fleet, fuel consumption choices are more dependent on pricing policies and factors such as gasoline subsidies and quotas, and with the slightest change in fuel rates and quotas, use natural gas fuel. . Impact and challenge fuel management in the public transport fleet. The main purpose of this is to identify ways to establish a sustainable structure of natural gas consumption in the fuel of urban taxis with special management conditions in Iran. After reviewing previous research and interviewing experts and specialists, dynamic hypotheses were determined from the fuzzy Delphi method and based on it, the causes-root and flow-accumulation operating system dynamics method were developed and extracted. The results of this study show that if you buy and replace worn-out gasoline and conventional two-burner taxis with a two-burner car based on a gas engine in a period of 20 years (from 1400 to 1420), natural gas consumption will increase by 24% and sustainably JEL Classification: C53, C61, Q41, Q54, Q58 Keywords: Urban Taxis, Systems Dynamics, Public Transportation, Natural Gas.