This is a good idea, it would make sense to have in any vehicle with communication radios.
From PonderBank Team
Trucks should have an audio panel like an airplane, so the driver can choose what radios and communications devices are operational. But more importantly as well for UHF and CB radios have a voice microphone on a flexible mount close to drivers mouth. Simular to like the older model FH Volvo Trucks had for the phone but as well have a push to talk button that can be placed any where for the drivers best convenience , like on the gear stick lever so the UHF and CB radio can be...
A 5th wheel,Turntable , tow hitch coupling idea to make towing vehicles, ride and perform better. Even the truck Manufacturers that promote comfort and safety should look at this.
Very likely Well worth The money for any Manufacturer in the business. From PonderBank Team
All motor vehicles should have a test switch for all external lights. May be some do, but considering its a requirement to get your drivers licence there should be a feature like this on all vehicles sold new. As its impossible to check your brake lights with out help or a old stick.