Are you tired of big fuel tanker trucks and other inappropriate ground vehicles lumbering around your back-country bush strips?  This simple tweak to the Living World settings in MSFS 2020 can be used to disable ambient vehicle traffic at smaller airfields that would not ordinarily have such vehicles.

WARNING!

This add-on modifies the ambient vehicle traffic for the entire world, not just one airport.  So you cannot use this to turn off ambient traffic at a specific airport.  Because the add-on changes the behavior of ambient traffic globally, it could also negatively impact other add-ons.  That said, the add-on will let you turn off ambient traffic for some parking types while leaving others alone.  So used carefully it can be helpful, particularly for small bush strips that should not have vehicle traffic.

Default settings

By default, the add-on disables spawning of ambient vehicles for RAMP_GA_SMALL parking spots, which are typical of smaller airfields.  All remaining parking types will continue to spawn ambient traffic.  So in its default configuration, this add-on should not turn off ambient traffic at large airports with gates and larger ramp parking.

Turning off ambient traffic for additional parking types

If you want to disable ambient traffic for other parking types besides RAMP_GA_SMALL, you can edit the file named tsr_LWcfg.xml in the LivingWorld_Config folder and change the "Rate" parameter for one or more other parking types from "1.0" to "0.0".  Do not delete lines from this file, as any missing parking types will then default to a "Rate" of zero and will not spawn ambient traffic.

Fine tuning vehicle traffic

The "Rate" parameters for each of the parking types can be adjusted to values other than "0.0" or "1.0" to fine tune the level of ambient traffic generated by each parking type (again on a global basis).  MSFS decides how many ambient vehicles to spawn at an airport by multiplying the number of parking spots of each type at the airport by the "Rate" parameter for that parking type, then multiplying the result by the setting of the Airport Vehicle Density slider under the Traffic tab in General Options in MSFS.  In theory, you could use this to gain finer control over ambient vehicle traffic than you can get using just the Airport Vehicle Density slider.  YMMV.