Sleepy Classes - Kuthiran Tunnel- • It is Twin-tube tunnel at Kuthiran in Thrissur District of Kerala state in India. • It is located on National Highway 544, owned and operated by
![First tunnel in the Kuthiran twin-tube tunnels closed for four months for concrete works | Travel | Onmanorama First tunnel in the Kuthiran twin-tube tunnels closed for four months for concrete works | Travel | Onmanorama](https://img.onmanorama.com/content/dam/mm/en/kerala/top-news/images/2021/8/1/kuthiran-tunnel.jpg.transform/schema-16x9/image.jpg)
First tunnel in the Kuthiran twin-tube tunnels closed for four months for concrete works | Travel | Onmanorama
![Ismailia, Egypt. 4th Sep, 2018. People work in a tunnel under construction in Ismailia, Egypt, on Sept. 4, 2018. Egypt will inaugurate soon two twin- tube road tunnels linking the restive Sinai Peninsula Ismailia, Egypt. 4th Sep, 2018. People work in a tunnel under construction in Ismailia, Egypt, on Sept. 4, 2018. Egypt will inaugurate soon two twin- tube road tunnels linking the restive Sinai Peninsula](https://c8.alamy.com/comp/PJNKR2/ismailia-egypt-4th-sep-2018-people-work-in-a-tunnel-under-construction-in-ismailia-egypt-on-sept-4-2018-egypt-will-inaugurate-soon-two-twin-tube-road-tunnels-linking-the-restive-sinai-peninsula-to-the-egyptian-heartland-a-project-egypt-hopes-would-help-improve-the-impoverished-territory-credit-ahmed-gomaaxinhuaalamy-live-news-PJNKR2.jpg)
Ismailia, Egypt. 4th Sep, 2018. People work in a tunnel under construction in Ismailia, Egypt, on Sept. 4, 2018. Egypt will inaugurate soon two twin- tube road tunnels linking the restive Sinai Peninsula
![Davao City's Longest Road Mountain Tunnel Proceeding in Full Swing | Department of Public Works and Highways Davao City's Longest Road Mountain Tunnel Proceeding in Full Swing | Department of Public Works and Highways](https://www.dpwh.gov.ph/DPWH/sites/default/files/rd_mountain_tunnel_in_full_swing.jpg)
Davao City's Longest Road Mountain Tunnel Proceeding in Full Swing | Department of Public Works and Highways
![Applied Sciences | Free Full-Text | Resilience Assessment of a Twin-Tube Motorway Tunnel in the Event of a Traffic Accident or Fire in a Tube Applied Sciences | Free Full-Text | Resilience Assessment of a Twin-Tube Motorway Tunnel in the Event of a Traffic Accident or Fire in a Tube](https://pub.mdpi-res.com/applsci/applsci-12-00513/article_deploy/html/images/applsci-12-00513-g001.png?1641456656)
Applied Sciences | Free Full-Text | Resilience Assessment of a Twin-Tube Motorway Tunnel in the Event of a Traffic Accident or Fire in a Tube
![Twin-tube, Single-track High-speed Rail Tunnels and Consequences for Aerodynamics, Climate, Equipment and Ventilation | Semantic Scholar Twin-tube, Single-track High-speed Rail Tunnels and Consequences for Aerodynamics, Climate, Equipment and Ventilation | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/a31197982c9287bc2998dd056d019996e1b28d04/2-Figure1-1.png)
Twin-tube, Single-track High-speed Rail Tunnels and Consequences for Aerodynamics, Climate, Equipment and Ventilation | Semantic Scholar
![Schematic representation of the cross-section of the twin-tube motorway... | Download Scientific Diagram Schematic representation of the cross-section of the twin-tube motorway... | Download Scientific Diagram](https://www.researchgate.net/publication/374573563/figure/fig1/AS:11431281197302307@1696947183689/Schematic-representation-of-the-cross-section-of-the-twin-tube-motorway-tunnel_Q320.jpg)
Schematic representation of the cross-section of the twin-tube motorway... | Download Scientific Diagram
![Cross section of the twin tube Depot Connection TBM Tunnels, 2 * 34 m 2 . | Download Scientific Diagram Cross section of the twin tube Depot Connection TBM Tunnels, 2 * 34 m 2 . | Download Scientific Diagram](https://www.researchgate.net/publication/311761758/figure/fig3/AS:441380754464772@1482244780900/Cross-section-of-the-twin-tube-Depot-Connection-TBM-Tunnels-2-34-m-2.png)
Cross section of the twin tube Depot Connection TBM Tunnels, 2 * 34 m 2 . | Download Scientific Diagram
![Applied Sciences | Free Full-Text | A Simultaneous Analysis of the User Safety and Resilience of a Twin-Tube Road Tunnel Applied Sciences | Free Full-Text | A Simultaneous Analysis of the User Safety and Resilience of a Twin-Tube Road Tunnel](https://www.mdpi.com/applsci/applsci-12-03357/article_deploy/html/images/applsci-12-03357-g003.png)