The festival typically causes a surge in emergency calls, with an increase of nearly 700 calls over a normal weekend due to devices misinterpreting mosh pit movements as collisions.
Each accidental call requires assessment and follow-up, diverting resources from genuine emergencies.
Attendees are asked to answer callbacks from hidden numbers to confirm their safety and disable emergency alerts on their devices.
Download Festival, expected to host about 75,000 fans, has seen past incidents, including two deaths in 2022.