If this man owes 71580 bht, then that means he actually owed about 7158 bht originally. It's 60 bht to use those 2 lanes one way. The fine is 10 times, so 600 baht if you don't pay. I was under the impression that you had 7 days to pay and not 2 days. I've used those lanes several times and went to the website and made a QR payment and had no problems. Apparently this driver use the lanes about 60 times round trip. I tried to create an account, but because I don't have a Thai credit card, I wasn't allowed. They wouldn't accept my Thai bank visa/atm card as well.