Which of the following is the longest Highway Tunnel in India (as of 2022)?

The correct answer is Atal Tunnel.

To understand why the Atal Tunnel is the correct choice, let us look at the details of the tunnels mentioned in the options:
1. Atal Tunnel (Rohtang Tunnel): Located in Himachal Pradesh under the Rohtang Pass on the Leh-Manali Highway, this is a highway tunnel with a length of 9.02 km (5.6 miles). As of 2022, it is officially recognized as the longest highway tunnel in India, and the longest highway tunnel in the world situated at an altitude above 10,000 feet (3,000 meters).
2. Pir Panjal Railway Tunnel: Located in Jammu and Kashmir, this is a railway tunnel stretching approximately 11.215 km. Although it is longer than the Atal Tunnel, it is a railway tunnel and not a highway tunnel.
3. Karbude Tunnel: Located on the Konkan Railway route in Maharashtra, this is a railway tunnel with a length of approximately 6.5 km.
4. Jawahar Tunnel: Located in Jammu and Kashmir under the Banihal Pass, this is a highway tunnel with a length of approximately 2.85 km, making it much shorter than the Atal Tunnel.

Therefore, the Atal Tunnel is the longest highway tunnel in India.