Google Maps released a report based on all the data it has collected from drivers in years past.
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It says the best time to leave for your holiday road trip in the Bay Area is 3 a.m. Wednesday (Yes, it's already too late if you're just reading this now). The worst time to leave is 4 p.m. Wednesday.
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AAA says the largest delays today will be nearly 4 times normal drive times.
They predict the worst commute in the Bay Area is going to be this afternoon on I-680 North between exits 8 to 21. That's from Milpitas through the Sunol Grade up toward the Dublin-Pleasanton area and I-580.
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The good news about having all that traffic, you won't have to worry about getting a speeding ticket.
The Thanksgiving weekend is a Maximum Enforcement Period for the CHP, so you'll see a lot of officers on the road looking for traffic violations and drunk drivers.
Check traffic maps and drive times here.