Roll way
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 Métro Line M2 are H-steel.
- * The ones of the Lyon Metro 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.