Union commuters, brace yourselves: a new Raising Cane's is headed to the old Union Plaza Diner site on Route 22, and the town wanted to know exactly how much it would mess with traffic before signing off.

The Planning Board voted 8-2 Thursday to approve tearing down the shuttered diner and an adjacent building to make room for a 3,350-square-foot restaurant with 98 seats, 33 parking spots and a two-lane drive-thru.

A traffic engineer testified the restaurant would add roughly one extra car to the line at the Springfield Road turn onto westbound Route 22 during rush hour — a route plenty of Summit-area commuters already use to hit the highway.

One lane runs during slow stretches (room for 13 cars); a second opens up during rushes, bringing total capacity to 30 cars on-site. Data from four other New Jersey locations showed peak lines average about 13 vehicles — comfortably under capacity. One nearby Cane's clocked an average order time of 2 minutes, 28 seconds, thanks to its famously short five-item menu.

Plan on late nights: the restaurant would run until 1:30 a.m. on weeknights and 3:30 a.m. on weekends, opening at 9:30 a.m. daily. A comparable location employs 55 to 75 people.

No construction timeline yet, but this would be Union County's second Raising Cane's, after one already under construction in Linden.