Congestion pricing for cars is effective in reducing traffic, but a difficult sell

After some initial opposition, residents of London, England have gotten used to congestion pricing for cars—and the reduced traffic that has resulted.

London's plan initially faced opposition and a legal challenge, but its success has led to widespread acceptance. Many drivers took to traveling at off-peak hours, carpooling, or taking transit after the initiative went into effect.

Between 7 a.m. and 6 p.m. on weekdays, drivers entering a 21-square-kilometer zone in Central London are charged $20. The city offers discounts or exemptions for zone residents, people with disabilities, emergency vehicles, motorcycles, and taxis.

Within three years, traffic fell by 15% and congestion—the extra time to make a trip because of impeded traffic flow—was reduced by 30%. Noting the success of congestion pricing in London and other cities including Stockholm, cities worldwide including Singapore, New York, and Vancouver have implemented or are considering congestion pricing.