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Tractive effort power looks like the road load force + the inertial forces times the velocity. The true aerodynamic resistance can't be ignored in the real world and can play a significant role in the over all resistive components of the Road load power =(rolling resistance*mass*gravity*cos(theta)[(rolling resistance term)]+1/2*rho*cd*0.8*af*v^2 (aerodynamic drag term)+m*g*sin(theta) [Grade resistance])*v.
Therefore the acceleration force looks like Pte-Prl as mentioned previously but the driveline efficiencies cannot be ignored or assumed at a single reference value, also the inertial term changes with each gear, the effective mass is not a constant, its highest in lower gears. I could go on, but that's enough for now
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