| With the development of TOD concept, behavior of multi-mode rail trip has become an increasingly concerned study field. However, the service intensity and radiation of rail transportation are decreased with access or egress distance. In different rail service radiation spheres, service qualities of various access facilities of rail transportation have been recognized as a key parameter to determine rail trip attraction. And in certain scope of concerned rail service, travel behavior of rail commuters and evaluation of car commuters corresponding to rail access facilities are considered to be key elements in determining improving rail trip attraction.This paper relies on the National 973 Program Research Project (2012CB725402). In this study, it designed and organized rational surveys on both target rail commuters and car commuters, who live or work within 1-3km away from rail stations. The survey captures and collected commuting behavior of both the target rail commuters and car commuters, and established database for these two groups respectively. Based on the database of current rail commuters, analyses and comparison of travel behavior were conducted for both home-end and work-end respondents; the satisfaction perceived during rail access and egress trip was explored to demonstrate its utility to overall rail trip satisfaction; meanwhile, the perceived satisfaction related to different rail access facilities was investigated to account for its role in determining satisfaction towards rail access and egress trip. For the target car commuters, Rasch model was established to explore the perceived inconvenience of rail access facilities and conducted problem diagnosis of rail access facilities'allocation. Finally, from the view of practical political application, a new-type community bus was introduced as an efficient, flexible feeder service to connect main rail service. Ordinal Logistic model was established to explore the probability and potential for car commuters to transfer their travel mode to community bus-rail-trip.The results showed the existing differences of travel behavior in home-end surveyed respondents and work-end surveyed respondents, and the differences mainly lies in travel characteristics, perception of travel duration and distance. A stronger adaptation to long-distance access trip was found for these rail commuters; on the contrary, target rail commuters were more sensitive to duration and distance of rail egress trip. Meanwhile, an obvious positive utility impact of satisfaction concerning rail access and egress trip was found to the overall rail trip satisfaction. And compared to personal characteristics and interchange duration or rail trip, the perceived satisfaction towards rail access facilities was the key elements in determining rail access and egress trip satisfaction. Based on the results of Rasch model, the perceived inconvenience of rail access facilities was a key constraint for car commuters to transfer to rail trip. Moreover, according to DIF analyses, rail access facilities' improvement effectiveness was in accordance with personal characteristics distinctions. In terms of transferring to mode of community bus-rail trip, personal travel attitudes were found in Ordinal Logistic model to be the key determinants. And the current travel behavior (e.g. rail and car travel frequencies) was found to have a persistent influence. Car commuters were found to be more sensitive to dominant service indexes of community bus; and service indexes such as crowding, low speed and service charges, were found to be with less significant in encouraging mode transfer.Compared to previous study, this study proposed a new perspective of rail access facilities evaluation from both rail commuters and car commuters. The results of this study would provide basis for policy-making in improving rail access facilities, optimize rail interchange resource allocation and enhance the overall rail trip attraction. |
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