Rollway

A roll way or running pad is the pad placed on a concrete slab or on the ties on the outside of the 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.
* With a conventional track:
** The ones of the Montreal Metro are precast concrete on a concrete slab.
** The ones of the Paris Métro are H-steel on ties.
** The ones of the Mexico City Metro are H-steel.
** The ones of the Santiago Metro are precast concrete below ground and H-steel above ground.
** The ones of the Lausanne Metro Line M2 are H-steel.
** The ones of the Lyon Metro (lines A, B and D) are H-steel.
* Without a conventional track:
** The ones of the Lille Metro are precast concrete.
** The ones of the Toulouse Metro are precast concrete.
**The ones of the Sapporo Municipal Subway are flat steel with a central guide rail
** Busan Subway Line 4, runs directly on a concrete slab between guide bars
** Many people mover systems, such as Crystal Mover, run directly on concrete slabs or other surfaces between guide bars
** Some guided buses, rubber-tyred trams, such as Translohr and Bombardier Guided Light Transit, use concrete slabs while being guided by a single central rail

Gallery

Image:QC-STM GarageBeaugrand 20040706-132759 VoieEssai.jpg, 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.
Image:M2-Ouchy-train-arrive+track.jpg, Ouchy M2 station, showing the angle iron guide bars, the bumper posts and the I-beam roll ways as well as bumper posts.
File:Ligne 1 du métro de Lille Métropole - Garage-atelier des Quatre Cantons (11).JPG, Lille Metro line 1 near Quatre Cantons Workshop, the absence of conventional rail for guidance at junctions is compensated by a central groove.

See also

* The technology of rubber-tyred metros

External links

Truck and runway (bogie and roll way)

{{rail-transport-stub

Permanent way