In the question mentioned above INR 5.00 which you paid to the conductor went into his pocket not in the government treasury and you travelled free by the government bus; so you should deposit INR 8.00 in government treasury. For example, buy a ticket of INR 8.00 and trash it without travelling by it.
(Risala Rafiq Safar Dar Jawahir al-Fiqh, 3: 69, pub. Zakaria Book Depot, Deoband)
Allah knows Best!
Darul Uloom Deoband