Range and Battery Depletion Concerns with Electric Vehicles

Table 1

Overview of the questionnaire.

Part	Topic	Outline of questions	Summary statistics
I	Car ownership	Number of owned vehicles and their characteristics.	Ave. = 1.48; SD = 0.657; Gasoline (89.2%), hybrid (9.1%), diesel (0.3%), and other or blank (1.4%); Ave. = 5.35; SD = 1.20; Ave. = 5.28; SD = 3.96
	Car usage	The most frequent daily travel distance on a driving day, how often the car is used, and how often a trip is more than twice as long as the most frequent distance.; Note: the numbers of weekdays and weekend/holiday days in a month are assumed to be 20 and 8 days, respectively.	Weekday: ave. = 21.5; SD = 32.6; Holiday: ave. = 35.7; SD = 69.0; Weekday: ave. = 14.5; SD = 7.02; Holiday: ave. = 5.76; SD = 2.95; Weekday: ave. = 1.66; SD = 2.19; Holiday: ave. = 1.18; SD = 1.18
II	Preferred deployment of charging stations	Choose a maximum of three locations where you would prefer to see charging stations deployed.	See Figure 1
	Desired vehicle; range^†	Without the preferred deployment of charging stations and with deployment (nine range categories: up to 50 km, 50–100 km, …, 350–400 km, and over 400 km)	See Figure 2
III	Purchasing hypothetical EV1	Seven factors with three levels are shown.; Capacity (two, four, and seven people), price (1.5–4.5 million yen), charging time (4–12 hours), range (100–300 km), deployment ratio (10%, 33%, and 100%) of charging stations at gas stations, rest areas on intercity expressways, and large retail facilities.	Purchase: 165 (42.1%); Not purchase: 229 (57.9%)
	Purchasing hypothetical EV2		Purchase: 145 (36.2%); Not purchase: 249 (63.8%)
IV	House characteristics	Possibility of installing a charging station at home considering the actual situation (i.e., parking space).	Possible: 270 (68.2%); Impossible: 124 (31.8%)
	Household characteristics	Household size and household income.	Ave. = 3.03; SD = 1.20; Ave. = 7.65; SD = 4.49

is “How much distance which EV can run by one charge do you desire?”