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Traction Budget

Return to figure 8. At point C we are on the \ensuremath {v_\mathrm {max}} curve but still decelerating. If we're using all of our traction for cornering then we won't be able use the brakes to stay at \ensuremath {v_\mathrm {max}} as it decreases. (Although aerodynamic drag can still slow us down.) As the car's speed gets closer to \ensuremath {v_\mathrm {max}}, $a_b$ must decrease. A linear scaling of $a_b$ works well.
a_b \leftarrow a_b (1 - v/\ensuremath{v_\mathrm{max}})
\end{displaymath} (27)

Sam Varner 2012-01-18