Rewrite for Turn Restricted Shortest Path Algorithm in PgRouting

In graph theory, the shortest path problem is the problem of finding a path between two vertices (or nodes) in a graph such that the sum of the weights of its constituent edges is minimized. In real life scenario, the road network is modeled as a graph where the graph's vertices correspond to road junctions and the edges correspond to road segments, each weighted by the positive length of its road segment.

A turn models a movement from one edge element to another. Often in the real world scenario, turn restrictions such as no-left-turn, no-right-turn etc. are imposed on the road network.

The aim of the project was to come up with a solution for calculating the shortest path from a given source node to a destination node in the graph containing turn restrictions.