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Uber set a record for the most drivers on the road in the D.C. area this morning, during the closure of Metrorail, the company says.

According to a release, Uber saw a driver “increase of 50 percent over last Wednesday’s rush,” helping to keep average surge pricing below 1.7 times base fares. While the company doesn’t specify how many trips were taken or where use was heaviest, it does reveal that one in four riders took UberPOOL, its carpooling option where up to two people can board a vehicle traveling along a similar route at the same time. UberPOOL also saw record use, the company says. It adds that new riders increased by “nearly 70 percent” as compared to the same 24-hour span last week. Notably, Uber HAS expanded its carpooling service to a greater area Wednesday:

Photo from Flickr user Adam Fagen; screenshot via of Uber