Abstract:
Park and Ride is an important component of transit systems that can improve access to transit stations and support mode shift, thus reducing car travel. The objective of this study is to understand how characteristics of park and ride facilities affect park and ride catchment area. Users of nineteen park and ride facilities of rail transit lines in Bangkok Metropolitan area were surveyed. The catchment area of each park and ride facility is defined as the samples 85th percentile of access distance from the users home origin to the facility. The multiple regression method was used to analyze the effects of characteristics of park and ride on the radius of the facilitys catchment area. Results show that characteristics with significant effects include capacity, parking fee, building type, distance adjacent stations and driving time to CBD. To test the models performance, we used the model to predict the catchment area of Krungthonburi park and ride facility, which was not included in our sample. The catchment radius was underestimated by 5.26 kilometer or 29.65%, compared to the survey results from a previous study. The model was also used to predict the catchment radii of three park and ride facilities in Bangkok, including Laksong, Bangsue and Samrong, and the results are 38.46, 22.43 and 26.31 kilometers, respectively. The results from this study can be used to support decisions to locate the site of future park and ride facilities, and predict the required capacity. However, the main limitation of the proposed model is due to the small sample size and the limited range of explanatory variables, which means that it cannot be applied with certain future park and ride with characteristics that are not within the relevant range.