A MultiObjective Optimization Approach for Integrated Timetabling and Vehicle Scheduling with Uncertainty

Table 3

Sets and variables of the problem formulation.

Notations	Definition
	Set of pull-out arcs
Q	Set of pull-in arcs
R	Set of the trip-link arcs
A	Set of all arcs, A = P∪Q∪R
D	Set of depots
T	Set of trips
hf	Headway during the period f
xij	1 if arc (i, j) is selected; 0 otherwise