Jeep enthusiasts enjoy the 2015 Jeep Invasion which traditionally stops traffic in downtown Butler. This year's event begins at 6 p.m. Friday for spectators and will continue until 10 p.m.

It has become an annual tradition that the Butler County community and Jeepers from across the country look forward to — the Jeep Invasion.

The Bantam Jeep Heritage Festival's sold out signature event returns to downtown Butler on Friday.

During this event, select streets are closed to traffic and Jeeps of all shapes, sizes and colors are parked for thousands of visitors to inspect and admire.

Jeep Invasion parking begins at 5 p.m. and the event officially starts at 6 and runs until 10 p.m. It is sponsored by Pennzoil.

DJs will play music throughout the night to create a festive atmosphere downtown. Food vendors also will be available at multiple locations.

“It really is amazing to see more than 1,000 Jeeps lining the streets and huge crowds walking around to see them all,” said Patti Jo Lambert, festival director.

“Jeep owners tell us over and over that the Invasion is one of their favorite aspects of the event, and they love how the Butler community welcomes them here.”

Pennzoil will offer a special treat to Invasion attendees when the company unveils its new national television commercial on a Jumbotron at the Butler County Courthouse.

Stars of CNBC's “The Car Chasers” show, Jeff Allen and Meg Bailey, also will be on hand to greet Jeep enthusiasts, sign autographs, take pictures and participate in aspects of the event.

Parking detailsParking will not be permitted after 3 p.m. Friday on these downtown streets: Main, Cunningham, Jefferson, North, Brady and Penn along with select parking lots along Main Street.Traffic detours will go into effect at 3 p.m. when Main Street closes.Registered participants will be permitted to enter the Invasion area at the intersections at Main and Wayne streets and at Main and Pearl streets. Participants must have an Invasion dash sign to enter.Volunteers from The Rodfathers will manage the Jeep parking.SouvenirsFestivalgoers will have the chance to check out this year's festival merchandise featuring T-shirts, hats, flags, commemorative pins, umbrellas and more. The merchandise store will be in front of the Butler County Courthouse and it opens before the Invasion begins.Invasion mapA map showing streets affected by parked Jeeps, public parking lots, food vendors, music, festival merchandise and other details can be found in this special section and on the Jeep Festival website, www.BantamJeepFestival.com.

The crowd in Diamond Park get a wave from riders during the 2015 Jeep Invasion on Main Street. This year's event will include a preview of a new national commercial by Pennzoil on a Jumbotron at the Butler County Courthouse.