What happens when a major urban freeway burns down? Chaos, right? Gridlock! Except not:

Traffic congestion was down Monday and Tuesday. The amount of time drivers were stuck in traffic moving slower than 60 mph was down 8 percent around the entire Bay Area, according to Caltrans data. Congestion on Oakland freeways, meanwhile, was down by more than 50 percent, the data showed.

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BART ridership, meanwhile, spiked dramatically, hitting an all-time record on Tuesday. The number of BART commuters was up 10.4 percent Tuesday and 5.2 percent Wednesday morning; no figure was available for Monday, when fares were waived.

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“It doesn’t seem like travel times were getting worse; in fact, in some cases, they actually seemed to be getting better,” said Karl Petty, an engineer who heads [Berkeley Transportation Systems].

Petty said a small percentage of drivers staying off the roads can make a huge difference in lowering traffic congestion — not just at the freeway collapse site, but around the region. This week’s changes by a few drivers along key routes seemed to make a big difference, according Caltrans data from thousands of buried freeway sensors.

Imagine if we did something crazy like that on purpose!

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