Research Article

Efficiency of Semi-Autonomous and Fully Autonomous Bus Services in Trunk-and-Branches Networks

Table 1

Notation.

NotationDescription

vehicle size (seated and standing capacity)
headway
fleet size
number of branches
total cost
waiting cost
in-vehicle travel time cost
operating cost
capital cost
operating cost per vehicle hour
capital cost per vehicle hour
unit in-vehicle travel time cost
unit waiting time cost
unit fixed operating cost per vehicle-hour
unit size-dependent operating cost per vehicle-hour
unit fixed capital cost per vehicle-hour
unit size-dependent capital cost per vehicle-hour
reduced fixed unit operating cost of semi-auton. vs. conv. bus
reduced fixed unit operating cost of fully auton. vs. conv. bus
additional fixed unit capital cost of semi-auton. vs. conv. bus
additional fixed unit capital cost of fully auton. vs. conv. bus
relative commercial speed of semi-auton. vs. conv. bus
relative commercial speed of fully auton. vs. conv. bus
nominal one-way travel time on the corridor
nominal one-way travel time on the branch
nominal round-trip travel time
directional travel demand on the corridor
directional travel demand on between corridor and each branch
directional travel demand on each branch
total waiting time per bus line per unit headway
maximum load of each bus line
desired occupancy rate
platooning rate