This section is dedicated to a rather ghost like issue which seems not to receive enough attention. Yes, there is a lot of talk but very little action. As we think people deep indsde do want to do good, the right thing, it may just be that there are many other items on ones list with perceived higher priority. And missing information. However, pollution in its varied ways does affect everybody at a very direct level by now and there is no option to avoid the impact. It is cutting short lives everywhere.
Just stepping outside to walk the dog in a place like München presents one with the problem of air pollution. Let us make it specific. The corner of Lindwurm- and Poccistrasse, right in-front of the KVR (Kreisverwaltungs Referat) a place practially everone knows in town. Google Maps readily will find the location. A static non-interactive view is given below with the respective cross section indicated. This just to illustrate that the considered cross section is pretty average, nothing special. Certainly not part of the high car volume infrastructure.
A short description of the Lindwurmstrasse, including historical information, can even be found on Wikipedia in case of interest. Of the streets crossing here Lindwurmstrasse carries the main traffic. The images below describe typical traffic conditions on a Tuesday morning at approximately 10 am. Looking down Poccistrasse towards the crossing near the KVR.
The traffic volume is visibly high for the small street. As for many places in town, the street is lined by tall buildings restricting the exchange of air, particularly on days with calm weather. Not much space is reserved for predestrians and bicyclists and traffic lights, as is common, favor motor vehicles.
Crossing Lindwurmstrasse and following the bus in the above picture, one enters Ruppertstrasse, the smallest of the four routes to take. The Rupperstrasse traffic volume on work days, Monday through Friday, was recorded for a three week period in March/April 2019. Even with this small statistics it is obvious that basically in the order of 10000 vehicles* pass through Rupperstrasse every work day. Yes, there is less traffic on the weekends, but it is also true that even more traffic is found on Lindwurmstrasse.
* As the interrest is focused on air pollution which is correlated the type and amount of fuel burned, the number of vehicles is defined such that it addresses the differences of fuel efficiency. A truck or bus is assumed 3 times as polluting as a regular car. Some semi-trucks and vans are expected to be twice as polluting as a regular car.