# Road tunnel restrictions – Guidance and methods for categorizing road tunnels according to dangerous goods regulations (ADR)

> Research article (Safety Science, 2019) · cited 11× · AI/ML

**Wikidata**: [openalex:W2923469446](https://www.wikidata.org/wiki/openalex:W2923469446)  
**Source**: https://4ort.xyz/entity/road-tunnel-restrictions-guidance-and-methods-for-categorizing-road-tunnels-according-to-dangerous-goods-regulations-adr