Sorry to say that this method is not suitable for vehicles on the road.
For forklifts, it operates mostly on level grounds and speed is not a factor.
For vehicles on the road, the vehicle is designed taking into consideration the power to weigth ratio and the different gear selections.
If the throttle is restricted, it is going to affect the performane of the vehicle and when going uphill, you would not have sufficient throttle opening to pull the vehicle up.
The most commonly used is the speed lmiter as with the add-on governer.
Japanese vehicles are limited to 180 kph ( 110 mph ) by a speed limiter programmed in the ECM and when the speed is achieved, the engine would dut off. This is operated by signals from the speedometer.
There are after market devices for delimiting the speed cut but I do not know if it can be used for reducing the maximum limit.
Sunday, August 9th, 2009 AT 4:03 AM