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Journal of Advanced Transportation

Journal of Advanced Transportation / 2020 / Article / Tab 1

Research Article

Resilient Schedule Coordination for a Bus Transit Corridor

Table 1

Notation.
SymbolMeaningBaseline value
Set of links of route k—
Fixed vehicle operating cost of route k (RMB/min)100
Unit vehicle operating cost (RMB/vehicle-min)4.0
Variable vehicle operating cost of route k (RMB/seat-min)0.2
Operating cost of route k (RMB/min)—
Total waiting cost (RMB/min)—
Total boarding delay cost (RMB/min)—
Total transfer cost (RMB/min)—
Intercycle delay cost (RMB/min)—
Missed-connection cost (RMB/min)—
Dispatching-delay cost (RMB/min)—
Slack-time cost (RMB/min)—
Total cost (RMB/min) in time period—
The lowest total cost (RMB/min) in time period—
Delay cost at signal priority intersection (RMB/min)—
Number of passengers already on board at transfer center m on route k (passengers/min)—
Expected value of route k headway (min)—
Expected travel time on link I (min)—
Expected running time on link i (min)—
Transfer demand from other routes to route k at transfer center m (passengers/min)—
Probability density function of arrival time on route k—
Greatest common divisor of and —
Headway of route k (min)—
Maximum load factor on route k—
Load factor on route k—
Frequency of missing signal priority (buses/hour)—
Demand of route k (passengers/min)—
Transfer demand from route j to k (passenger/min)—
Total transfer demand to route k (passenger/min)—
Vehicle size on route k—
Round-trip time (min)—
Slack time at station m on route k (min)—
Scheduled passenger loading time per station (min)—
Extra passenger loading time per station (min)—
Vehicle delay at signal priority intersection (min)—
Passenger loading time (min)—
Passenger alighting time (min)—
Traffic signal time cycle (min)—
Link travel time (min)—
Delay time at signal priority intersection (min)—
Green light time in a traffic signal cycle (min)—
Duration of time period (min)—
In-vehicle value of time (RMB/passenger-min)—
yBase cycle (min); value is 1 min, the same as the minimum value of headway in a rail station—
The transfer waiting times between connecting routes j and k (RMB)—
Signal priority indicator (=1 if signal priority provided and 0 otherwise)—
Variance of headway on route k (min2)—
Unit passenger waiting cost (RMB/passenger-min; baseline value is 1.5 RMB/passenger-min)1.5
Unit passenger waiting cost (RMB/passenger-min; baseline value is 5.0 RMB/passenger-min) from boarding delay5.0
Unit passenger waiting cost (RMB/passenger-min) from missing signal priority intersections10,000
Unit passenger loading time (min/passenger)0.1
Unit passenger alighting time (min/passenger)0.05
Integer multiples of the base cycle—
 = 1 if transfer station m is on route k and 0 otherwise—

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