Beginning this weekend at Infineon Raceway, NASCAR officials have increased the caution car speeds by five miles per hour at all four NASCAR-sanctioned road courses – Infineon, Watkins Glen International, Road America and Circuit-Gilles Villeneuve.
Pit road speeds also have been increased by 5 miles per hour at Watkins Glen and Infineon.
The changes will help alleviate engine strain caused by elevation changes, explained John Darby, NASCAR’s managing director of competition and Sprint Cup Series director.
“With cars going uphill and downhill, plus the way teams have developed their cars and gear ratios, the speeds were too slow,” Darby said. “Engines were overheating, especially with extended caution periods.”
This weekend’s caution car speed at Infineon and Road America is 45 mph. Pit road speed is 40 mph at Infineon and 35 mph at Road America.