Mathematical Problems in Engineering

Research Article

A Hybrid GRASP+VND Heuristic for the Two-Echelon Vehicle Routing Problem Arising in City Logistics

Algorithm 1

GRASP for the construction of an initial solution.
( ) Initialize random generator;
( ) repeat
( )     ← RandomPermutation( );
( )    Trips ←  Split( );
( ) until  Trips are feasible
( ) ← CompleteSolution(Trips);
( ) return the feasible solution generated;