Custom Road Network Contraction for Routing

Laure-Hélène Bruneton from CampToCamp brings us 'Custom Road Network Contraction for Routing'. When computing the shortest path between two locations, the size of the roads dataset is often the number one impacting factor on performances. Let's discuss some ideas on how to reduce the size of this dataset, while preserving topology and attributes. Here is the link to my blog post on the same subject: https://dev.to/camptocamp-geo/quick-attribute-aware-road-network-contraction-50h1