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roll bar

a heavy steel transverse bar in the form of an inverted U rising from the framework of an automobile to prevent its occupants from being crushed if the vehicle rolls over.
Also, rollbar.
1950-55 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for roll bar
  • The unit shall incorporate a roll bar design to protect components from accidental damage.
  • During a safety inspection, the mower was considered unsafe due to no manufactured roll bar.
  • Different vehicle specifications, including requirements for factory equipped seatbelts and a roll bar, type device.
  • Always use the seat belt when the roll bar is raised.

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