Does the President of the United States wear a seatbelt when riding in the presidential motorcade?
Ryan Rantz April 8, 2016 NASCAR, NASCAR 10 Lap Averages, NASCAR Average Speeds, NASCAR Practice Speeds, Texas, Texas Duck Commander 500, Texas Happy Hour Practice Speeds. Texas Duck Commander 500 NASCAR Happy Hour Practice Speeds and Averages (PDF) Missed Happy Hour?
There is an established pit road speed limit for each race. Since NASCAR cars do not have speedometers, the first pace lap of each race is run at pit road speed so drivers can get a tachometer reading for pit speed. There are a variety of other safety rules (see penalties above) that must be followed.