Back up "record runs" not required for "Pro" classes only

[Greenlight]

Back-Up Run Certification No Longer Required for NHRA National Records
http://www.dragracecentral.com/DRCSt...UMMIT#indextop


"The one-percent policy was adopted during the early development stages of the timing system and wasn't as reliable as the technology that we are fortunate to have in race control today," said Graham Light



I guess the timing system that is used during division races isn't reliable and the technology is not as good as the equipment used at National Events. Otherwise, the sportsman classes would have been included in the new policy.