While calculating route, boundary, or matrix for a given segment, if the start or end points
lie off the road network, the ERM attempts to find the closest segment near the start and end
points. In this extended calculation, the ERM considers the geometrically closest segments. In
this approach, if the closest segment is restricted for routing, an error is received -- “Path
could not be calculated” in case of the route. The same error is received when the matrix and
circular boundary is calculated according to maxOffRoadDistance for the
polygon.
The following solution attempts to improve the find closest segment snapping logic that ignores the closest restricted arcs and provides you the next-best-possible route.