1. Traffic jams affect people specifically by causing smog in dozens of cities across both the developed and developing world, and in the U.S., commuters spend an average of a full work week each year sitting in traffic.
2. Employers can contribute to dealing with traffic congestion by implementing flextime, allowing employees to travel to and from work at off-peak traffic times, encouraging carpooling, and allowing more staff to telecommute (work from home).
3. The cities successful with congestion pricing are Singapore, London, and Stockholm.
4. The drawback of building more roads is that it does not really keep cars off the road; it only accommodates more of them.
5. The US government decided to upgrade the traffic systems to increase capacity on public transport systems and upgrade them with more efficient technologies, recognizing the benefits of public transport for both people and the environment.