# Drivers’ visual characteristics in small-radius optically long tunnels on rural roads

> Research article (Tunnelling and Underground Space Technology, 2021) · cited 59× · AI/ML

**Wikidata**: [openalex:W3158118352](https://www.wikidata.org/wiki/openalex:W3158118352)  
**Source**: https://4ort.xyz/entity/drivers-visual-characteristics-in-small-radius-optically-long-tunnels-on-rural-roads