NASCAR will use single-file lineups for restarts with 20 laps remaining in all three national series this year, NASCAR Vice President of Competition Robin Pemberton said today. The previous rule called for single-file restarts with only 10 laps remaining. All other restarts had lapped cars on the inside lane. NASCAR is still allowing for the first driver one-lap down [Lucky Dog] to get back on the lead lap until there are 10 laps left in the race. Pemberton said the rule was to allow the leaders more room to race following a caution in the waning laps. “We’ve been talking to the crews, teams and drivers and we felt like it was a time to make a change,” Pemberton said. “We haven’t taken away the lucky dog and haven’t hurt anybody from getting a lap back.”