A Few Calle Arroyo Residents
- Posted "No Trespassing" Signs below (2018 to 2020) and Created the "Association of Calle Arroyo Neighbors"
- Hired a Security Guard (June 4, 2020) to give Cyclists a Notice (below); "Unauthorized use of Calle Arroyo is trespassing and a crime."
- Sent Intimidating letters (below) to local high school mountain bike and cross-country teams; "Diablo roads are private and use by the general public is prohibited."
- Hundreds of cyclists were Compelled to Ride on Dangerous Diablo Road (video below).