What's the difference between hgs and cgs ?
1 Answer
Both are high-speed toll systems. HGS is post-paid, which means that the toll is deducted after the passage, equivalent to the domestic ETC. OGS is prepaid, that is, recharge and then deduct. Most of the cars in the garage are HGS because it is impossible to determine which sections you will pass and how much you will be charged. If you recharge too much, you cannot refund it, so it is not suitable for OGS.