The automated tolls cut down on air pollution, which in turn improves the health of pregnant women.
High tolls can keep a transportation network efficient and equitable. Right now, the city's system accomplishes neither.
The failure is especially clear when compared to spending by Europeans.
It's not as crazy as it might sound.
Broadly speaking, the answer comes down to poor planning and a commuter learning curve.
High-tech high-occupancy tolls come to the nation's capital. Is this the future of highway infrastructure?
Here, you pay for the roads and resources you use, thanks to innovative public-private partnerships.