In the year 2000, Nova began delivering new low floor buses to the CTA. #6472 is seen westbound on the #87 87th Street route, about to cross Stony Island Ave.
The last of the Nova low floor buses arrived in 2002, and were equipped with orange digital destination signs. #6794 is seen on westbound on the #152 Addison route, outside Wrigley Field before a Chicago Cubs baseball game. Even the run number indicator, below left near the door, is orange. "F" is the Garage Code for Forest Glen Garage, while 806 is the run number.
In 2003, the CTA began receiving new low floor articulated buses from North American Bus Industries, for its Lake Shore Drive express routes. #7550 waits on Washington St. near Desplaines Ave., at the beginning of the #14 Jeffery Express route. In 2009, these buses were withdrawn from service due to structural problems.
In 2005, the CTA fleet became 100 percent accessible, as the 4900 series narrow buses on the University of Chicago routes were temporarily replaced with 13 Orion I buses, 15 years old and acquired second hand from Pace. #4921 is seen eastbound on 55th St. at Kenwood Ave.
In 2006, the CTA began replacing the second hand Orion I buses with Optima Opus buses. At 30 feet long, these were the first shorter buses acquired by the CTA since the 3300 series Flxible buses acquired in 1966. These buses introduced an interesting new paint scheme. Plans were to use these buses on other routes requiring lower capacity buses, in addition to the University of Chicago routes. One of the buses is seen southbound on Ellis Ave. at 57th St., at the University of Chicago. These buses were retired in 2014.
In 2014, the CTA went back to Nova for its next order of buses. #8024 is seen at Midway Airport, on the #62H Archer Harlem route.