I recently contributed to the OSRM project by adding an option to compute a route that makes vehicle arrive on the right road side. You can find the source code of this contribution here.

Arrive on the right lane:

When the vehicle is traveling on the right-hand side of the road and its arrival is on the left-hand side of the road, the vehicle will not stop on the right-hand side next to the arrival. The route computation will make the vehicle take a route that will allow it to arrive in the right direction, left-hand side, so that its end point to be on its right-hand, even if it has to make a detour.

This allows vehicle’s passengers to get in or get out of the vehicle without having to cross the road by foot.

Examples 1

The end point (red) is on the right-hand. A direct route is calculated because the vehicle is already on the right side of the road.

… See full entry