# Where are the passengers?

> Research article (Proceedings of the 23rd SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2015) · cited 19× · AI/ML

**Wikidata**: [openalex:W2296100959](https://www.wikidata.org/wiki/openalex:W2296100959)  
**Source**: https://4ort.xyz/entity/where-are-the-passengers