<P> Since NASCAR does not allow speedometers or electronic speed limiting devices , the pace car circles the track at pit road speed during the warm - up laps . This allows each driver to note the RPM at which pit road speed is maintained . Drivers exceeding that speed on pit road will be penalized , typically a `` drive - through '' or `` stop and go '' penalty , costing them valuable track position . </P>
what is the speed of the nascar pace car
pit road speed