Large trucks use the engine for braking when stopping distance is the issue.
As for handsignals and such....a better way has evoloved. One that does not require distraction on the part of the driver, those being automatic lights. This came about partly because of increased traffic and the need to remove unneeded tasks to perform.
You may call it a removal of intent but then you are just being obtuse about it. Signaling with a hand gesture is the same intent as signaling with a blinker. Simply a different tool used to do so.
Your last paragraph hold some merit. Seat belts aplly to what you said just the same. That was my solution to much of the opposition now wasn't it? Engineer the use of seat belts for operation just as the brakes are.
One could even argue that a seat belt is about stoppng distance also. In relation to your seat and the windsheild that is.
Now this one you really reach into the ozone for:
One could even argue that a seat belt is about stoppng distance also. In relation to your seat and the windsheild that is.
WOW... (Que the laugh track)