evidence: Prime Minister Narendra Modi will dedicate to the nation Asia’s longest bi-directional road tunnel on the Jammu-Srinagar National Highway on Sunday (April 2). The Chenani-Nashri all-weather tunnel has been built at a cost of over Rs 2,500 crore in about five years. [...] VENTILATION: With inlets every 8 metres bringing fresh air into the main tube, and exhaust outlets every 100 meter opening into the escape tube, the longest highway tunnel in India also happens to be Asia’s longest bi-directional highway tunnel with fully transverse ventilation system. Such a ventilation system is a first for India. [...] To ensure smooth travel and safety of commuters, ABB designed, engineered and supplied low harmonics variable speed drive (VSD) system for tunnel ventilation. The VSDs and motors are installed at the North (Nashri) and South (Chenani) portals for air supply and exhaust. "ABB India is privileged to deploy technology for another infrastructure project of national importance. ABB’s best in class global technology manufactured in India will make Asia’s longest road tunnel safer and will ensure effective ventilation,"