Moreover, this study investigated the effect of different time points and time trend on EV share. Lower EVs share at 2005, 2006 was due to Hurricane Katrina, and at 2008 as result of economic recession. After these phenomena commuters roughly chose EVs due to the disrupted socio and economic conditions. Time trend model’s result demonstrated that the EVs share has been increasing over time. It is based on the effect of time on new technology diffusion. Over time people knowledge about new technology has been increasing, and it makes their mind ready to accept new technology.
In this study, incentives were considered as a dummy variable, because most of the incentives are based on the vehicle price, which is unavailable data over time. In order to have more accurate results, it is suggested to accomplish the modeling on data with monetary incentive values. Another suggestion for future work is incorporating the number of EVs’ infrastructures in model development. Construction of more charging stations will increase the EV’s range, which will increase utility of EVs and will encourage commuters to adopt EVs