Cyclists can now call AAA and other groups for help when they run into trouble during a ride. Here, cyclists ride near the White House in Washington, D.C., last autumn. Mladen Antonov/AFP/Getty Images hide caption

itoggle caption Mladen Antonov/AFP/Getty Images

A Wyoming man has won a Supreme Court case fighting efforts to route the Medicine Bow Rail Trail through his family's property. On this map, the trail is the unmarked route moving from the lower right toward Fox Park, where Marvin Brandt lives. Google Maps hide caption

itoggle caption Google Maps

No more helmet hair: Hovding's "invisible" helmet is an air bag tucked away in a collar that gets fastened around a cyclist's neck. It's aimed at urban cyclists and priced at $535. Courtesy of Hovding hide caption

itoggle caption Courtesy of Hovding

Electric bikes made by French company Moustache are displayed during the Cycle Show 2013 in Paris last month. Charles Platiau/Reuters /Landov hide caption

itoggle caption Charles Platiau/Reuters /Landov

A mechanic repairs a bike at Calmera bike shop in Madrid in September. As car sales slump across Europe, bicycle sales in Spain are outpacing cars — a trend seen across much of the Continent. Pablo Blazquez Dominguez/Getty Images hide caption

itoggle caption Pablo Blazquez Dominguez/Getty Images

"So I got a ticket," bike commuter Molly Millar wrote in a tweet last week. The Vancouver cyclist had left her bike in a rack outside her office building. Molly Millar/Twitter hide caption

itoggle caption Molly Millar/Twitter

In a photo taken on July 24, ELF bike owner Mark Stewart discusses the unusual vehicle during his trip from North Carolina to Massachusetts. Valerie Bonk/AP hide caption

itoggle caption Valerie Bonk/AP

Supreme Court Justice Stephen Breyer fell from his bike while riding along the National Mall in Washington, D.C., on Friday. He underwent surgery for a fractured shoulder on Saturday. Alex Brandon/AP hide caption

itoggle caption Alex Brandon/AP

A bicycle built by British firm Donhou was created with the goal of hitting high speeds,€” perhaps including 100 mph. Oli Woodman/Bike Radar hide caption

itoggle caption Oli Woodman/Bike Radar

The thief who stole Harly and Courtney Forbes' tandem bicycle Monday returned it Wednesday, along with a note of apology. Police say they are still investigating the case. Vancouver Police hide caption

itoggle caption Vancouver Police

Using a cardboard liner allows a cycling helmet to be lighter and stronger than standard models, says designer Anirudha Surabhi. Anirudha Surabhi hide caption

itoggle caption Anirudha Surabhi