# Road traffic density estimation and congestion detection with a hybrid observer-based strategy

> Research article (Sustainable Cities and Society, 2018) · cited 40× · AI/ML

**Wikidata**: [openalex:W2907322536](https://www.wikidata.org/wiki/openalex:W2907322536)  
**Source**: https://4ort.xyz/entity/road-traffic-density-estimation-and-congestion-detection-with-a-hybrid-observer-based-strategy