Characteristics of Premium Transit Services that Affect Choice of Mode. Transit Cooperative Research Program (TCRP) Report 166

摘要

Traditional travel forecasting models typically use travel time and cost to represent the usefulness of each transportation mode to serve potential trips. For transit options, time and cost are used to define optimal routing (i.e., boarding locations, routes, and alighting locations) and the probability that the traveler will select transit to make the trip. These techniques have often struggled to represent ridership demand for some higher-speed, higher-frequency transit services, particularly those classified as fixed guideway systems (labeled as premium services in this document). Forecasters have tried to represent the higher levels of demand for these services with a variety of techniques including defining separate transit choices in mode choice procedures and adjusting perceived travel times to represent the apparent preference for these services. Typically, these adjustments are applied on an aggregate basis with very little understanding of the underlying factors that cause models to under-represent premium transit ridership. To improve understanding of these underlying factors, this research focused on identifying and quantifying aspects of transit travel behavior in different urban contexts that affect traveler use of premium transit services.