Olympic-style traffic restrictions are back in Beijing. This time each car will have to spend one day a week off the roads, as opposed to every other day as during the Games. On Monday, cars whose registration number ended in a 1 or 6 were grounded. Tuesday will see 2s and 7s off the roads, and so on. The new rules are expected to take 800,000 cars a day off the roads, with a promise that half the capital’s cars will be banned on days of exceptionally heavy pollution, the BBC reports.