roll bar

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roll bar

n.
A sturdy metal bar over the top of a car or other wheeled vehicle to prevent or reduce injury in case of a rollover.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

roll′ bar`


n.
a steel bar arching over an automobile from side to side, designed to protect the passengers if the vehicle rolls over.
[1950–55]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

roll bar

Protective metal bar that arches over the driver in an open cockpit.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
Translations
References in periodicals archive ?
ARS replaces the conventional mechanical anti-roll bars with hydraulically-assisted roll bars. A lateral-acceleration sensor detects how hard the vehicle is cornering and sends the information to an ECU which processes the information and signals a valve-sensor block that determines how much hydraulic pressure to apply to the ends of the anti-roll bars.