Guide bar

{{Short description|Bars beside rubber-tyred metro tracks}}

{{for|the part of a steam engine or other slider-crank linkage|crosshead guide}}

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{{Lead rewrite|date=June 2013}}

{{More citations needed|date=February 2023}}

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Guide bars, or guiding bars[https://infovisual.info/en/transport/truck-bogie Guide bar] are rubber-tyred metro systems that incorporate {{RailGauge|sg|allk=on}} track. They have angle irons as outside of the two roll ways.

The Busan Subway Line 4 lacks a rail track, and has I-beams installed as guide bars.

The flanges are vertical. The Sapporo Municipal Subway, that lacks a rail track as well, has no guide bars. It has a central guide rail instead. Guide bars are also used to provide guidance for guided buses.