A roll way or running pad is the pad placed on a
concrete slab
A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Steel- reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ...
or on the
ties on the outside of the
conventional track along both
running rails of a
rubber-tyred metro
A rubber-tyred metro or rubber-tired metro is a form of rapid transit system that uses a mix of road and rail technology. The vehicles have wheels with rubber tires that run on rolling pads inside guide bars for traction, as well as traditio ...
or along the unconventional track of a
tram
A tram (called a streetcar or trolley in North America) is a rail vehicle that travels on tramway tracks on public urban streets; some include segments on segregated right-of-way. The tramlines or networks operated as public transport ...
. The rubber-tyred wheels roll directly on the roll ways.
* With a conventional track:
** The ones of the
Montreal Metro
The Montreal Metro (french: Métro de Montréal) is a rubber-tired underground rapid transit system serving Greater Montreal, Quebec, Canada. The metro, operated by the Société de transport de Montréal (STM), was inaugurated on October 14, ...
are
precast concrete
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast b ...
on a
concrete slab
A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Steel- reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ...
.
** The ones of the
Paris Métro
The Paris Métro (french: Métro de Paris ; short for Métropolitain ) is a rapid transit system in the Paris metropolitan area, France. A symbol of the city, it is known for its density within the capital's territorial limits, uniform architec ...
are
H-steel on ties.
** The ones of the
Mexico City Metro are H-steel.
** The ones of the
Santiago Metro
The Santiago Metro ( es, Metro de Santiago) is a rapid transit system serving the city of Santiago, the capital of Chile. It currently consists of seven lines (numbered 1-6 and 4A), 136 stations, and of revenue route. The system is managed by ...
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
The Lyon Metro (french: Métro de Lyon) is a rapid transit system serving Lyon Metropolis, France. First opened in 1974, it currently consists of four lines, serving 40 stations and comprising of route. Part of the Transports en Commun Lyonnai ...
(lines A, B and D) are H-steel.
* Without a conventional track:
** The ones of the
Lille Metro
The Lille Metro (french: Métro de Lille) is a driverless light metro system located in Lille, France. It was opened on 25 April 1983 and was the first to use the VAL (french: véhicule automatique léger, en, light automated vehicle) sys ...
are precast concrete.
** The ones of the
Toulouse Metro
The Toulouse Metro (french: Métro de Toulouse, oc, Mètro de Tolosa) is a rapid transit system serving Toulouse Métropole, France. It is the only Metro system in Occitanie. The city's public transport system was initially managed by the ''So ...
are precast concrete.
**The ones of the
Sapporo Municipal Subway are flat steel with a
central guide rail
**
Busan Subway Line 4
Busan Metro Line 4 () is a rubber-tyred metro line of the Busan Metro network that connects part of Gijang-gun, Busan, and upper Haeundae-gu, Busan, into Dongnae-gu, Busan Korea. It is operated by the Busan Transportation Corporation. Opened ...
, runs directly on a
concrete slab
A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Steel- reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ...
between
guide bar
The rubber-tyred metro systems that incorporate track have angle irons as guide bars, or guiding bars, outside of the two roll ways. The Busan Subway Line 4, that lacks a rail track, has I-beams installed as guide bars. The flanges are vertic ...
s
** Many
people mover
A people mover or automated people mover (APM) is a type of small scale automated guideway transit system. The term is generally used only to describe systems serving relatively small areas such as airports, downtown districts or theme parks. ...
systems, such as
Crystal Mover, run directly on concrete slabs or other surfaces between guide bars
** Some
guided bus
Guided buses are buses capable of being steered by external means, usually on a dedicated track or roll way that excludes other traffic, permitting the maintenance of schedules even during rush hours. Unlike trolleybuses or rubber-tired tra ...
es,
rubber-tyred trams
A rubber-tyred tram (also known as tramway on tyres, french: tramway sur pneumatiques) is a development of the guided bus in which a vehicle is guided by a fixed rail in the road surface and draws current from overhead electric wires (either ...
, such as
Translohr
Translohr is a rubber-tired tramway (or guided bus) system, originally developed by Lohr Industrie of France and now run by a consortium of Alstom Transport and Fonds stratégique d'investissement (FSI) as '' newTL,'' which took over from L ...
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 bar
The rubber-tyred metro systems that incorporate track have angle irons as guide bars, or guiding bars, outside of the two roll ways. The Busan Subway Line 4, that lacks a rail track, has I-beams installed as guide bars. The flanges are vertic ...
s, precast concrete
Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast b ...
roll ways and conventional track.
Image:M2-Ouchy-train-arrive+track.jpg, Ouchy M2 station, showing the angle iron guide bar
The rubber-tyred metro systems that incorporate track have angle irons as guide bars, or guiding bars, outside of the two roll ways. The Busan Subway Line 4, that lacks a rail track, has I-beams installed as guide bars. The flanges are vertic ...
s, the bumper posts and the I-beam
An I-beam, also known as H-beam (for universal column, UC), w-beam (for "wide flange"), universal beam (UB), rolled steel joist (RSJ), or double-T (especially in Polish, Bulgarian, Spanish, Italian and German), is a beam with an or -shap ...
roll ways as well as bumper posts.
File:Ligne 1 du métro de Lille Métropole - Garage-atelier des Quatre Cantons (11).JPG, Lille Metro
The Lille Metro (french: Métro de Lille) is a driverless light metro system located in Lille, France. It was opened on 25 April 1983 and was the first to use the VAL (french: véhicule automatique léger, en, light automated vehicle) sys ...
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