In the early 1980s, John Summerson and a friend were driving up Mount Lemmon, a 9,100-foot mountain in Tucson, Ariz. They noticed a lone bicyclist winding his way up the steep road, still miles from ...

Crews finished striping the new lane, which stretches along the southbound side of South Lamar from Barton Springs to Treadwell Street. The bicycle climbing lane is a concept already used widely in ...