An Optimization Approach considering Passengers’ Space-Time Requirements for Bus Bridging Service under URT Disruption

Table 2

Model key parameter definition.

Parameters	Parameter meaning
	Set of URT stations affected by the URT disruption, including disrupted stations and turnover stations. , indexed by
	Set of URT turnover stations, ,
	Set of URT disrupted stations, ,
	Set of disrupted URT stations nearest to the turnover stations, ,
	Set of available buses, , indexed by
	Bus capacity
	Disruption duration
	Travel demand between and ,
	A large number
	Maximum number of local bus route round trips and direct bus route round trips
	Bus stop parking capacity
	Dispatch time from bus depot to URT station for bus
	Bus travel time between and
	Maximum dispatch time
	Maximum waiting time for passengers from disrupted station to turnover station
	Total bridging time for all buses
	Total bridging time of the buses in LBR
	Total bridging time of the buses in DBR