A study commissioned by the Colorado transportation department projected up to $40 billion in savings through improved air quality, road safety and reduced traffic congestion, among other things.

CHICAGO — Hundreds of bicycle advocates were at an annual summit this month in Washington, D.C., when their cellphones lit up over breakfast with an urgent email warning that President Donald ...

A study commissioned by the Colorado transportation department projected up to $40 billion in savings through improved air quality, road safety and reduced traffic congestion, among other things.