NHAI (National Highways Authority of India) has launched the 'Clean Toilet Picture Challenge', which will provide a ₹1,000 FASTag recharge on reporting dirty toilets at toll plazas on all National Highways. People can report dirty toilets by uploading geotagged pictures on the 'Rajmargyatra app' and providing details like the user's name, location, and vehicle registration number till October 31.