Complex sentence: As of 2010, the route is the busiest bus route in North America with a ridership of over 50,000 passengers per day, up from approximately 45,000 passengers per day in 2007.
Split into simpler sentences: As of 2010, the route is the busiest bus route in North America, with a ridership of over 50,000 passengers per day. This number is up from approximately 45,000 passengers per day in 2007.