Drivers who normally cut through Central Park by using the West Drive may have to find a new route.Starting today cars will only be allowed on the West Drive from 8 a.m. to 10 a.m. - an hour less than what was previously permitted. The park's East Drive will stay open from 3 p.m. to 7 p.m., and both roads will still be closed on weekends.The change makes the park more welcoming to exercisers in the early morning hours."This is one of the busiest times that people are out walking biking exercising, just enjoying the park. So the extent that we can have that be a car free experience for them, a safer experience for them, is obviously really important," said Transportation Commissioner Janette Sadik-Khan."We are completely thrilled. It used to be that the cars started streaming in at 7 a.m. and now the cars you know stay out for an extra hour," said Paul Steely-White of Transportation Alternatives. "It really gives people a whole another 60 minutes to get their morning workout in."City officials say the new hours are in line with the park accessibility portion of PlaNYC.