Reduced throttle or half rates

Hi all, is there a way to program Ardu to allow for reduced throttle or half rates via a switch. While I know this is built into Taranis and most standard radios it’s not an option in some of the FPV systems.

I have a rover that’s fairly quick but I also want to be able to cut the speed for close quarters and half rates would be perfect.

I don’t think there is a direct way to do that. I’m not sure you could even do that with a Lua script. Pretty easily done with a Transmitter mix. I use a mix on throttle because I don’t like center throttle neutral so I have a Reverse switch setup on the radio.

BTW-My 1st Rover was way to fast even with a gearing change. I went with a Crawler vehicle for the 2nd one.