I need to write equation in such a loop to calculate arrival time for each vehicle on its route waypoints.

For example my model desides the cheapest way with the route Route(1,A,C),Route(1,C,B),Route(1,B,F)all is 1.

So I have to calculate the arrival time of vehicle1 to waypoints C,B,and F in such a loop;

Since the vehicle 1 routed as A-C-B-F

-ArrivalTime(1,C)= TravelDuration(1,A,C)

-ArrivalTime(1,B)= ArrivalTime(1,C)+TravelDuration(1,C,B)

-ArrivalTime(1,F)= ArrivalTime(1,B)+TravelDuration(1,B,F)

The problem is that I have to use binary variable Route resutls to calculate the correct arrival time. How ever I can not assign any value to Route variable since the model decide that values.

Also I can not use the ArrivalTime equations in a loop to calculate correct time for correct node.

How can I do that please give me a solution method.

sets i "Vehichels"/1*10/

m "waypoint names"/A*F/

;

alias (m,n);

binary variable Route(i,m,n);

positive variable ArrivalTime(i,m);

table RouteMap(m,n)"Possible route connections"

A B C D E F

A 0 0 1 1 0 0

B 0 0 0 0 1 1

C 0 1 0 1 0 0

D 0 0 0 0 1 0

E 0 0 0 0 0 1

F 0 0 0 0 0 0

;

table TravelDuration(m,n)"Travel duration between each nodes"

A B C D E F

A 0 0 5 6 0 0

B 0 0 0 0 2 3

C 0 4 0 3 0 0

D 0 0 0 0 7 0

E 0 0 0 0 0 6

F 0 0 0 0 0 0

;