On the stability of preferences and attitudes before and after experiencing an electric vehicle

Jensen, Cherchi, Mabit, 2013, in Transportation Research Part D: Transport and Environment

doi:10.1016/j.trd.2013.07.006
Location Denmark
Population Other (specify)
Sample size 369
Factor analysis type nan, nan rotation
Stepwise regression no
Removal of insignificant variables no
Reviewed by LCM

Abstract

In this study, we investigate the extent to which experience affects individual preferences for specific electric vehicle characteristics, individual attitudes toward the environment, and the impact of the attitudes on the choice between an electric and a conventional vehicle. We use a two-wave stated preference experiment where data was collected before and after the respondents experienced an electric vehicle for three months. We estimate a hybrid choice model using jointly the stated choices before and after the test period. The results show that individual preferences change significantly after a real experience with an electric vehicle in the household. In particular, there are major changes in the preference for driving range, top speed, fuel cost, battery life and charging in city centres and train stations. In line with other studies, we find that environmental concern has a positive effect on the preference for EVs both before and after the test period, but the attitude itself and its effect on the choice of vehicle does not change. © 2013.

Factors

Variable Pattern loading
nan () nan

Models

Dependent variable Preference for vehicle attributes
Model type Hybrid choice
Sample size 369.0
R2 nan
Adjusted R2
Pseudo R2 (nan) nan
AIC nan
BIC nan
Log-likelihood at zero -54681.0
Log-likelihood at constants nan
Log-likelihood at convergence -52808.0
After
Variable Coefficient p-value
ASC (EV) -2.7 <0.05
Standard deviation for panel effect -1.46 nan
Fues costs (Gas) (DKK/km) -1.69 <0.1
Driving range (EV) (100 km) 1.62 nan
Top speed (0-120 km/h) (100 km/h) 5.24 <0.01
Top speed (120-160 km/h) (100 km/h) 0.06 nan
Battery life (100,000 km) 0.54 nan
Charging in city centers and larger train stations (dummy) 0.34 nan
Car purchase is mini class -3.16 <0.01
Driving range*multiple car household (EV) -0.6 nan
Battery stations*multiple car household (EV) 0.05 nan
Car purchase is medium 1 class (EV) -0.01 nan
Scale between waves 0.91 nan
Intersect 1.41 <0.01
Standard deviation of error term -1.22 <0.01
Before
Variable Coefficient p-value
ASC (EV) -0.32 nan
Standard deviation for panel effect 1.13 <0.01
Fues costs (Gas) (DKK/km) -0.95 <0.01
Driving range (EV) (100 km) 0.78 <0.01
Top speed (0-120 km/h) (100 km/h) 2.81 nan
Top speed (120-160 km/h) (100 km/h) 1.17 nan
Battery life (100,000 km) 0.35 nan
Charging in city centers and larger train stations (dummy) 0.55 nan
Car purchase is mini class -1.81 nan
Driving range*multiple car household (EV) -0.22 nan
Battery stations*multiple car household (EV) -1.81 nan
Car purchase is medium 1 class (EV) 0.48 nan
Intersect 10.35 <0.01
Standard deviation of error term -15.3 <0.01
Generic before/after
Variable Coefficient p-value
Purchase price (100,000DKK) -0.59 <0.01
Fues costs (EV) (DKK/km) -2.42 <0.01
Driving range (Gas) (100 km) 0.04 <0.05
Carbon emissions (100g/km) -0.55 <0.01
Top speed (over 160 km/h) (100 km/h) 0.07 nan
Battery stations (100 unit) 2.72 <0.01
Charging at work (dummy) 0.25 <0.01
Charging in city centers (dummy) 0.46 <0.01
Charging at larger train stations (dummy) 0.33 <0.01
Purchase price*No car purchase 0.54 <0.01
Car purchase is a used car -0.4 <0.01
Car purchase is small class -1.02 <0.01
Car purchase is medium 1 class -0.5 <0.01
Charging at workplace*work distance > 10 km (EV) 0.4 <0.01
Car purchase is mini class (EV) 0.142 <0.01
Car purchase is small class (EV) 0.86 <0.01
Car purchase is a used car (0-5 years old) (EV) 0.47 <0.01
Car purchase is a used car (5-10 years old) (EV) 0.99 <0.01
Multiple car household (EV) 0.9 <0.01
Male (EV) -0.48 <0.01
Latent environmental attitude 1.86 <0.01
Age 26-35 0.15 nan
Age36-45 0.19 <0.1
Age 46-55 0.17 nan
Age 56-65 0.26 <0.05
Age 65+ 0.29 <0.05
Car purchase is mini class (EV) -0.14 <0.05
Number of cars in household 0.13 <0.01

The Attitudes and Travel Database is produced with support from the Center for Teaching Old Models New Tricks at Arizona State University, a University Transportation Center sponsored by the US Department of Transportation through Grant No. 69A3551747116.

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