Guide bar
![](../I/m/QC-STM_GarageBeaugrand_20040706-132759_VoieEssai.jpg)
View of a track from a sandpile bumper post, in the Montreal Metro near the Beaugrand Station, showing the cross-section of guide bars, precast concrete roll ways and conventional track
The rubber-tyred metro systems that incorporate 1,435 mm (4 ft 8 1⁄2 in) track have angle irons as guide bars along the roll ways. The Busan Subway Line 4, that lacks a rail track, has I-beams installed with the flanges being vertical. The Sapporo Municipal Subway, that lacks a rail track as well, has none.
See also
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