2 e-Challan Mobile and Web Application: e-Challan is a sophisticated software application comprising Android based mobile app and web interface, developed for the purpose of providing an comprehensive solution for Transport Enforcement Officers and Traffic Policemen. This app-cum-application is integrated with Vahan and Sarathi applications and provides a number of user-friendly features while. Access our portal only through this official website/app. We never request your password, OTP, payment details or sensitive personal information via calls, emails, or messages or links. Access our portal only through this official website/app. We never request your password, OTP, payment details or sensitive personal information via calls, emails, or messages or links. Report any suspicious activity immediately to police authorities. eChallan Value Indicators eChallan Enabler eChallan Core Benefits What Is eChallan? Report. Access our portal only through this official website/app. We never request your password, OTP, payment details or sensitive personal information via calls, emails, or messages or links. Report any suspicious activity immediately to police authorities. Access our portal only through this official website/app. We never request your password, OTP, payment details or sensitive personal information via calls, emails, or messages or links. Report any suspicious activity immediately to police authorities. Challan Details After getting challan details you can further go for online payment Challan Number.