Germany's automotive industry and Chancellor Angela Merkel are increasingly worried about the economic effects of court-sanctioned diesel driving bans to improve air quality, as enacted in Hamburg last May. Four more cities are likely to enact bans.

Germans are serious about mitigating air pollution, especially nitrogen oxides and particulate matter, by-products of diesel combustion. Hamburg was the first German city to enact a driving ban for all but the newest diesel cars in parts of the city on May 31. Düsseldorf and Stuttgart, Aachen, and Frankfort are not far behind.
A landmark ruling by the Constitutional Court last February, stemming in part from the diesel emissions cheating scandal first discovered in the U.S. in September 2015, enabled cities to prohibit the operation of diesel cars to protect public health. As posted March 2:
The court further found that when emissions exceeded the allowed limits, banning all vehicles with diesel motors older than those approved in 2014 and gasoline-burning engines older than those approved in 2001 was the only way for the municipal authorities to ensure air quality.
"From May 31, the city of Hamburg is banning all but the most modern 'Euro 6' diesel vehicles from sections of two busy streets in the city," reported Arthur Sullivan for DW. According to Auto Express UK:
Euro 6 is the sixth incarnation of the European Union directive to reduce harmful pollutants from vehicle exhausts. The Euro 6 standard was introduced in September 2015, and all mass-produced cars sold from this date need to meet these emissions requirements. The aim of Euro 6 is to reduce levels of harmful car and van exhaust emissions, both in petrol and diesel cars.
"With cities like Stuttgart and Frankfurt poised to impose driving bans because of excessive levels of smog-causing nitrogen oxides, Chancellor Angela Merkel’s government is under increasing pressure to come up with a solution," reports Birgit Jennen on Sept. 27 for Bloomberg News.
“The quick and overall better way is to replace the old fleet with a new one,” Merkel said late Thursday at a town-hall event in Augsburg, Germany. “In addition, the door can be opened for retrofits on some vehicles...and we believe the customer shouldn’t have to pay for it.”
Indeed, to a great extent, that's how Dieselgate is being handled in the U.S. But due to the advocacy of Deutsche Umwelthilfe (DUH, known in English as Environmental Action Germany), driving bans, as opposed to huge financial settlements, are also permitted.
The manufacturers [Volkswagen AG, BMW AG and Daimler AG] are keen to avert driving bans as the incessant debate is causing consumers to shy away from diesel technology, which is profitable, secures German jobs and helps meet tighter environmental regulations. [Italics added].
Stuttgart and Aachen are next, followed by Frankfurt
"The ban will come into effect on January 1 in the hometown of carmakers Mercedes-Benz, Porsche and Audi," according to a DW report on July 11. Like the Hamburg ban, it will only be enacted in specific areas suffering bad air quality.
Overall the Stuttgart region has around 530,000 diesel vehicles. The new regulation will affect an estimated 190,000 vehicles that only meet the emission standard Euro 4 [2005 to September 2009].
The Autovista Group reported on June 12 that "[t]he German city of Aachen is likely to become the second in the country to introduce a ban on Euro 5 [purchased before September 2015] and lower diesel vehicles entering parts of the city."
The regional court has ruled that authorities in the area must implement a diesel ban in the city by January 2019 to allow the city to comply with EU air quality rules.
DW reported on a Sept. 5 court ruling in response to a second lawsuit brought by Deutsche Umwelthilfe that will require Frankfurt to "ban high polluting diesel vehicles from parts of the city."
FULL STORY: Germany Grapples to Find Exit From Diesel-Emissions Crisis

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto
The Tesla Cybertruck was recalled seven times last year.

National Parks Layoffs Will Cause Communities to Lose Billions
Thousands of essential park workers were laid off this week, just before the busy spring break season.

Retro-silient?: America’s First “Eco-burb,” The Woodlands Turns 50
A master-planned community north of Houston offers lessons on green infrastructure and resilient design, but falls short of its founder’s lofty affordability and walkability goals.

Test News Post 1
This is a summary

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto
The Tesla Cybertruck was recalled seven times last year.

Test News Headline 46
Test for the image on the front page.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
EMC Planning Group, Inc.
Planetizen
Planetizen
Mpact (formerly Rail~Volution)
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research
NYU Wagner Graduate School of Public Service