Why red traffic lights are on top + other unnoticed elements of urban life

? UNDER THE LAMPLIGHT-

The 99% Invisible City directs our gaze to the often unnoticed yet crucial features of cities. The book is a compilation of the episodes of Roman Mars and Kurt Kohlstedt’s podcast 99% Invisible. It addresses questions like why traffic lights are red on top and green on the bottom and why maintenance hole covers are round shaped, and celebrates the small details that we seldom pay attention to but that are essential elements to cities around the world. The book dives into the stories behind these design elements, the designers and people affected by the designs, and also includes line drawings throughout. A great read if you’re looking to learn more about urban spaces.