Pay-As-You-Drive Auto Insurance: A Simple Way to Reduce Driving-Related Harms and Increase Equity (Brookings, 2008)

Auto insurance costs about as much as fuel, but we basically pay for it at a flat rate, so there are no efficient price signals. Low-mileage, often low-income drivers subsidize higher mileage, generally high-income drivers, and the total amount of driving is much more than it would be with better

Driven to Spend (STPP, 2000)

Examines the cost of inefficient, sprawling transportation systems to citizens, especially those with low incomes. Read more here.