The movement of cars on the bridge, drone, thumping metal in the tunnel: Listen & Download Drone,, The movement of cars on the bridge .mp3 Error! Change your browser, please! ⇓ Download Bumper strikes ⚠ Ringing chain ⚠ Squeak, metal rotation ⚠ Rattle of metal, Drop ⚠ Traffic, trolley noise, Roller coaster ⚠ Metal strike ⚠ Pounding on metal objects ⚠ Mailbox Opening, Closing ⚠ Roll a metal barrel ⚠ Squeaking metal screw in a light bulb ⚠ Squeaking metal ⚠ Keying, Mailbox opening ⚠ ★★★★★