The current version of the rules is available here: http://cityliga.de/index.php/en/season/rules

We'll point out the rule changes from the last season in a later post.

The following rules were changed from CL18 to CL19:

- Driver changes are not only impicitly but now explicitly prohibited.
- Instead of two drop results, there will be just one, coming into affect after race four.
- There are no bonus points this season.

The following rules were changed from CL19 to CL20:

- A new point system is now in use.
- Again the two worst results are dropped from the standings.
- A new promotion and relegation system is in use, with multiple GridQualifyings and one combo each.

The following rules change from CL20 to CL21:

- If 2 Grids drive combined on one server, drivers from the lower grid have to be distinguished with a mark at the end of their names (/ 2 or / 3).
- Teams for the team title were reduced (to 2 / 3 drivers) and no longer need to consist of members of a existing team
- In the Grid qualifying mid season now also the best 2 drivers of the previous block will always promote
- Mandatory Stops without a stop window, can also be taken in the first lap now
- In the team championship the 'Grid Factor' was changed, so also the grid where the points will be scored, will be taken into account
- Drivers who fail after 75% of the race distance (laps), will still be classified
- The protest time was extended to full 24-hours (Tue 6:00 - Wed 6:00 german time)