ref dir is a second control seat or remote control that acts as the reference direction of travel, so that your seat can be in a turret but still drive left/right in relation to the body

I can't get this to work, the programmable block just keeps saying
"Caught exception during execution of script:No refDir found!
at Program..ctor()"

I recently realized that the below issue only occurs if using the wheels on a subgrid

I understand that with the new update the parking brake no longer works, as they have separated the action I cannot implement a parking brake except through a command.