PHOENIX - Arizona is the center of the stock car racing universe this weekend, with the Camping World 500 and the DC Solar 200 XFINITY Series race at Phoenix International Raceway this weekend.

The Monster Energy NASCAR Cup race is set for Sunday at 12:30 p.m. and the DC Solar 200 will begin at 1:30 p.m. Saturday.

Phoenix is expecting to tie or break heat records both Saturday and Sunday, so be sure to drink enough water and be prepared for lots of sunshine.

PIR is expecting nearly 100,000 people at the race, meaning the drivers on the track won't be the only ones facing complex traffic situations.

A release from PIR said after Sunday's race, likely between 4 and 7 p.m., I-10 Exit 131 (Avondale Boulevard) will be closed intermittently to allow traffic to disburse.

To avoid driving in the mess yourself, you can use the Park 'N' Ride program Sunday, which starts at the Ak-Chin Pavilion, just north of I-10 on 83rd Avenue. You'll be dropped off by "motor coaches" near Gate 4 at the raceway and picked up there afterward.

Park 'N' Ride services cost $10 per car and will run from 7 a.m. to 7 p.m. Sunday. The raceway will open to fans at 8 a.m. Sunday.

If you have a PIR parking pass, your ticket should tell you where to exit the freeway and where to park.

If you don't have a parking pass and you plan to park in a free lot, you have to exit I-10 at Litchfield Road or Estrella Parkway and head south. Signs and traffic controllers will point you in the right direction from there.

Eastbound I-10 drivers should take Exit 126 and drive south five miles to Vineyard Road and follow directions from there.

Westbound I-10 drivers should take Exit 128 and head south two miles to MC 85. Go west on MC 85 for a mile to Bullard Avenue. Take Bullard south and follow directions from there.