Subway by Anastasia Suen, illustrated by Karen Katz

From chapters.ca:
Come along for the ride as a little girl and her mother hop on the subway. From spinning turnstiles and musicians performing on the platforms to people hopping off and on and lights flashing past in the tunnels, the sights and sounds of the subway have an energy all their own. Anastasia Suens sprightly text and Karen Katzs brightly coloured patterns and lively perspectives combine for a pitch perfect celebration of an underground train ride, where the hustle and bustle is only part of the fun.