Paris is cracking down on older vehicles in an effort to reduce city emissions.

Starting this summer, the city will begin progressively restricting the use of buses and trucks registered before Sept. 30, 2001, AutoCar reported.

Cars, vans and light trucks registered before Sept. 30, 1997 will also be forbidden from venturing into central Paris, although all of the banned vehicles will still be allowed on the Perpherique, the large road that loops the center of Paris. 

Berlin implemented similar measures about five years ago, banning older autos from the center of the city.

Emission-reducing regulations will become increasingly restrictive with the goal of only cars registered after 2011 and motorcycles registered after July 2015 allowed on roads in central Paris by 2020.

The restrictions have been met with some resistance. A drivers' lobby group has said that the new regulations will result in "three million" vehicles being evicted from roads in the next five years, while motorcyclists have already held a mass demonstration to protest the measures.

To help locals transition to lower-emission models, the French government could offer incentives of as much as €10,000, or around $11,400, to entice older-vehicle owners to switch to electric models.

France has also increased the tax rate on diesel fuel to discourage its use as officials in more European cities raise concerns about diesel's effect on public health.

Beijing's mayor recently called the city "unliveable" because of its terrible smog caused by factory pollution and vehicle emissions, according to the Guardian. Tourism in Beijing dropped 10 percent year over year in 2013, a loss that was partly due to high levels of pollution in the city.

"To establish a first-tier, international, liveable and harmonious city, it is very important to establish a system of standards, and Beijing is currently doing this," Wang Anshun said in January, as quoted by the China Youth Daily newspaper.

"At the present time, however, Beijing is not a liveable city."

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