
287Accident Reconstruction
e plot of the absolute value of the function on the le side of Equation 9.184 is shown in
Figure 9.31.
e earlier analysis illustrates that the solution for the critical speed equation is accu-
rate to within 10% and is, therefore, within engineering accuracy. e variability in the
actual coecient of friction and the approximation of the radial distance play a more crit-
ical role in the solution for the loss of control around a curve. It should be pointed out that
there is no unique solution to Equation 4.88. Instrumented tests performed by the authors
validate the critical speed equation and rearm that the proper ...