Whether you’re a hardened Londoner who’s never ventured beyond Zone 2 or you're brand new to town, put your knowledge to the test and see how many of these questions you can get right and learn a little more about how TfL are helping to change your city's air quality.
Mum of one, Meriel Miller and daughter Emilia test drive the Stokke Scoot
My little Emilia is now two-and-a-half so I was on the hunt...
Little London is the essential bi-monthly guide to the most exciting activities and cultural events in and around the capital. Packed with the hottest holidays advice, coolest kidswear and interiors ideas, Little London will inspire you and your family.