Research on Optimization Model of Logistics Transportation Truck Path considering Environmental Impact: Experimental Data from Xiqing District, Tianjin

Table 3

The steps of ACO algorithms.

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ACO algorithm

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Inputs: O–D nodes (o, d) and parameters of K, NC, , , , Q

The arrival rate for each truck and the travel time distribution for each area

The real-time traffic flow on each route

Returns: optimal truck paths

Step 1. Initialization:

Initialize border nodes and tabu list

For each do

Let border node o be the origin location

/

End for

Step 2. Path selection:

For i 1 to do

For each do

Choose the next node j according to the equation mentioned

Add edge i, j to

End for

End for

Step 3. Path extension:

Compute / is the total cost of travel for ant k

Update and according to the equation mentioned

While not end condition do

Go to Step 2

End while

Print optimal truck paths

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