How does an electronic speed limiter on a car work? And why are most set at 155mph?
A limiter basically works by restricting the engines output at a certain speed to prevent it from letting the car go any faster. This can be done in many ways: decreasing the throttle application (on drive-by-wire cars), cutting off some fuel injectors, restricting the fuel pump output, etc. It all depends on what the manufacturer wants to do. Also, as previously mentioned, most are NOT set at 155mph. German luxury cars are set at that speed because european roads are completely different from north american roads. They are made for speed, and cops have different standards for enforcement. In north america the roads can handle high speeds, but most people can’t. So, the lawmakers have cut the speed down to a walking pace, meaning you need to break the law to even come close to a vehicle’s limited speed.
The speed limiter works by engaging the flux capacitor, applying minimal amounts of witchcraft to the rear limited slip-dif broom "boomstick" stick and then restricting the fuel intake valves in the central warp nacel cortex. If this has no effect the on-board hypercomputer conducts a Séance and speakes to NEWTON (in latin) and applies his third law. This could be any of his laws depending in what order he says them, if he gives his first law third then it will be the 1st law that is applied to the vehicle and so on. This then prevents the vehicle from exceeding its top speed.