Traffic congestion — problems and government measures

Rush-hour congestion is worsening in large cities across the world. It imposes costs that go well beyond inconvenience, and only governments have the tools to deal with them.

The first problem is economic. Millions of commuters lose one to two hours a day in stationary traffic, time that produces nothing, while delivery companies pass rising fuel and delay costs on to their customers, so congestion works as a hidden charge on every household. Workers who arrive exhausted are also less productive, compounding the loss. The second problem is a matter of health and safety. Queuing vehicles emit far more pollution per kilometre than moving traffic, which raises rates of asthma and heart disease among residents living beside main roads, and blocked streets delay ambulances and fire engines, turning a daily nuisance into a threat to life.

Governments can respond on two fronts. The first is supply: building metro lines and bus routes with segregated lanes so that public transport becomes faster and cheaper than driving, since commuters only abandon their vehicles when the alternative genuinely wins on time. The second is demand. Charging for entry to the city centre, as London and Singapore do, and raising parking prices make the true cost of driving visible, while planning rules that mix housing, offices and schools in the same district remove journeys altogether. Staggered working hours can also spread the peak.

In conclusion, traffic congestion damages both the economy and public health. Cities that combine serious investment in public transport with honest pricing of road space will improve; those that simply widen roads will find the new lanes filling up within months.