A New York City nonprofit helps blind riders take bike rides. I rolled with them.

As the weather gets warmer, you'll see more and more New Yorkers on bikes — and in Central Park, you may even see cyclists in blue T-shirts and jerseys riding tandem bikes.

They’re part of a local nonprofit organization called InTandem Cycling, founded by Artie Elefant in 2013. Elefant was an avid cyclist who lost his vision due to retinitis pigmentosa, but realized he could ride a tandem bike. While Elefant died of cancer that year, his vision for the group lives on.