“Giving people more viable alternatives to driving means more people will choose not to drive, so there will be fewer cars on the road, reducing traffic for drivers.”
Concise, easy to understand, and accurate. I have used it at least a dozen times and it is remarkable how well it works.
Also—
“A bus is about twice as long as a car so it only needs to have four to six passengers on board to be more efficient than two cars.”
the cities with the worst infrastructre are the ones that predated cars then were forcefully ripped up and paved. my town museum has pictures of people on horses and old timey big wheel bikes going peacefully down what is now a 6 lane road with no bike lanes and a sidewalk on only one side.