Candidate Sets for Alternative Routes in Road Networks (Extended Abstract)
Dennis Luxen, Dennis Schieferdecker · Proceedings of the International Symposium on Combinatorial Search · 2021
We present a fast algorithm with preprocessing for computing multiple good alternative routes in road networks. Our approach is based on single via node routing on top of Contraction Hierarchies and achieves superior quality and efficiency compared to previous methods. The algorithm has neglectable memory overhead.