Incorrect vehicle minimum gap

[BlindTerran]

The actual minimum gap between vehicles does not match the final variable MIN_GAP; the SRD also has the same issue. Using general velocity reduction algorithm instead of physics motion works fine for this.

[BlindTerran]

Since two vehicles are moving at different velocity, over time the actual SRD and the Minimum gap can have deviation. Try calculate SRD and minimum gap at run time

[BlindTerran]

Method 2 that modifies the general algorithm; known acceleration, the same formula calculate the SRD for a smoother result

[BlindTerran]

Instead of using distance traveled, predefined a variable delta time that vehicle takes to decelerate to replace SRD and use v.f-v.i / delta time to calculate acceleration