Reading Comprehension

Read the text and answer the question.

Our city's new bike-share program lets riders unlock a bicycle with a phone app and return it to any docking station. The first thirty minutes of each trip are free, which suits short errands well. After that, a small charge applies for every additional half hour, so longer journeys can add up. Riders who expect to use the bikes daily may prefer the annual membership, which removes the per-trip fee entirely but still bills for any ride that exceeds two hours. Helmets are not provided, and the program reminds users that local law requires them for riders under eighteen.