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A roll way or running pad is the pad placed on a concrete slab or on the ties on the outside of the 1,435 mm (4 ft 8+1⁄2 in) conventional track along both running rails of a rubber-tyred metro or along the unconventional track of a tram. The rubber-tyred wheels roll directly on the roll ways.

Gallery

View of a track from a sand drag, in the Montreal Metro near the Beaugrand Station, showing the cross-section of guide bars, precast concrete roll ways and conventional track
Lausanne Métro Line M2, showing the angle iron guide bars and the I-beam roll ways as well as bumper posts
Lille Metro line 1 near Quatre Cantons Workshop, the absence of conventional rail for guidance at junctions is compensated by a central stub guide rail.

v t e Rail infrastructure
Tracks (history)	Axe ties Ballast Baulk road Breather switch Cant Clip and scotch Date nail Fastening system Fishplate Ladder track Minimum radius Profile Tie/Sleeper Transition curve
Trackwork	Balloon loop Classification yard Headshunt Pocket track Junction Gauntlet track Guide bar Passing loop Track gauge dual gauge Rail track tramway track Rail yard Railway electrification overhead lines third rail ground-level power supply Railway turntable Transfer table (traverser) Roll way Siding refuge siding Switch Track geometry Water crane Water trough Wye
Signalling and safety	Anti-trespass panels Block post Buffer stop Catch points Defect detector Derailer Guard rail Interlocking Level crossing Loading gauge Platform screen doors Railway signal Signalling control Structure gauge Signal bridge Tell-tale Train stop Wayside horn
Structures	Coaling tower Motive power depot/Railway workshop Platform Roundhouse Shed for trains for goods Station building clock ghost list Water stop
Types	Industrial Military Private station list

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