Insurance by Mileage?

Insurance by mileage means that those who are on the road more often will need to pay higher premiums compared to those who rarely drives on the road to travel. The idea of it is somewhat similar to pay per use system on road tax. When we apply this, those who seldom go out can save more money. It is also an interesting idea because this can also prevent traffic. Why? Because the drivers might lessen their time in the road and will be thinking twice if they really need to drive their own cars or just take a public transportation.