Fixed-Route vs. Demand-Responsive Transport Feeder Services: An Exploratory Study Using an Agent-Based Model

Table 1

Description of the user-related output indicators.

Indicator	Abbreviation	Description/formulation
#Users	NU	Total number of travellers generated during the simulation
% Walking Users	WLK	Percentage of users who do not request for the feeder service and walk to/from the terminal
% Accepted Passengers	ACP	Percentage of travellers using the feeder service
% Rejected Requests	REJ	Percentage of travellers whose trip request was rejected
% Delayed Passengers	DEL	Percentage of users who are delayed beyond the time windows
Avg pretrip time [s]	TPT	Average time that elapses between when a user makes the trip request (and is accepted) and starts walking to the stop
Avg walking time [s]	TWK	Average time for a user of the feeder service walking from the origin to the stop or from the stop to the destination
Avg waiting time [s]	TWT	Average time that a traveller waits at the stop for the vehicle
Avg ride time [s]	TRD	Average time that a passenger spends on board a vehicle
Avg total travel time [s]	T	Average total travel time, which is the sum of the following components: T = TWK + TWT + TRD
Rejection penalty [s]	Trej	Total walking time related to rejected travellers divided by the total number of passengers.
Avg time stretch	STR	Average ratio, for all passengers, between T and the sum of the ride and walking time if using the shortest path (no waiting time).
Avg disutility [min]	U	As defined in [18], it is the weighted sum of TWK, TWT, and TRD considering the weighting coefficients of equation (16)

Only for the DRF service.