An example of Buzz bars on Skyliner at Lakemont Park
Single-position lap bars on wooden rollercoasters are commonly referred to as "buzz bars," a slang term named for the buzzing sound the bars make as they release. Only older wooden coasters and junior wooden coaster trains still use these bars. Most parks have switched to individual ratcheting lap bars, similar to the lap bars found on steel coasters. Many enthusiasts agree that single-position buzz bars give better air time on rollercoasters, as ratcheting lap bars tend to lock further during the ride in many installations. Lakemont Park houses the worlds oldest-surviving roller coaster, the Leap-The-Dips, and it is one of the few surviving roller coasters with side friction. ...
The traditional "pirate ship" style thrill ride often utilizes this type of restraint.