If you want or sandbox access :
The primary goal of VAHAN 4 is to centralize and standardize transport administration. Unlike its predecessor, which struggled with data discrepancies between states, VAHAN 4 ensures a unified, real-time database that captures every aspect of vehicle management—from registration to fitness certificates and tax payments. vahan 4
: API key + digital signature (RSA) for high‑value transactions; OAuth2 for read‑only. If you want or sandbox access : The