fuel for the sake of better fuel mileage if the computer sees a signal of a speed 5 of no more than say 5 above the set speed 3 and a positive slope 14 for better fuel mileage the computer 1 would set at 18 a fuel rate 2 higher than that set if the slope signal 20 indicated level ground such a setting would be especially helpful if slope were to be steadily increasing 3 without having a measurement of the wind the computer will 34 see 34 the wind effect as a changed speed in the absence of a change in fuel flow or slope an soa cruise control tends to surge engine power as variable winds cycle the truck speed up and down this results in reduced fuel mileage compared to steady fuel flow under wind surges changes in fuel rate can be delayed by this invention such that the range of variable fuel rates under surging winds is minimized 4 fuel economy can be helped if the tuck is held to accelerate even if the truck is lightly loaded as if the truck were heavily loaded the computer can be programmed to achieve this by limiting fuel flow to hold acceleration within a given range with startup on an uphill or downhill path the best acceleration can be programmed via fuel flow rate taking slope into consideration 5 it is best to try to maintain momentum going into a hill if the truck were to receive a gust of tail wind just as a hill climb were started an soa cruise control would reduce fuel flow in reaction to the ensuing speed increase while the present invention would not because it would sense the positive.