The rest of paper is organized as f

The rest of paper is organized as follows. In Section 2,
a literature review is given on both VRP and optimal path
problem in STD networks. In Section 3, the STD network
is defined and the model of STDVRPTW is formulated.
In Section 4, a routing construction algorithm is presented.
Computational instance and analysis are shown in Section 5.
In Section 6, conclusions are made and future directions are
given.