Bike New York, organizers of the popular Five Boro Bike Tour in New York City, yesterday announced several security measures in response to the Boston bombings.
From CBS New York:
In the wake of the Boston bombings, the [Bike New York] has banned backpacks, hydration packs, saddlebags, and any other large bags for the 40-mile ride on May 5.
Checkpoints along the route will be set up to ensure compliance, and confiscated items will not be returned.
The event draws more than 32,000 bike riders, who will only be able to use small fanny packs, water bottles and bike frame bags.