DART is celebrating National Bike Month by offering free rides to anyone who boards a bus with a bike during May. Just load your bike on the rack on the bus — it takes less than 20 seconds — and take a seat on the bus. The program applies to local, express, flex and on-call services. DART, the Des Moines Area Regional Transit Authority, also offers bike storage at Central Station and bike-and-ride assistance on its MyDART App