Just when you thought you'd heard it all, it turns out that pregnant women living near highways equipped with toll booth E-ZPass systems are less likely to have premature births and babies with low birth weights.

This may seem like an extremely random connection, but when cars use E-ZPass they do not have to come to a complete stop to pay the toll, which reduces congestion and emissions. As a result, premature births declined 10.8 percent and low birth weights dropped 11.8 percent for women who lived within 1.2 miles of the E-ZPass toll plaza, according to study from Columbia University's Department of Economics.

If you lived about 2 miles from a toll booth with E-ZPass, which scans a device equipped to the car window and automatically charges the toll amount to a credit card, prematurity dropped 7.3 percent and low birth weight fell 8.4 percent, the study said. The study compared women living close to toll booths with E-ZPass with women living near toll booths without the systems.

Other studies have already revealed that systems like E-ZPass cut harmful emissions by about 50 percent, but the Columbia study is the first to study its effect on health, according to the Wall Street Journal.