Home Page > Section 21; pages: 1, 2, 3, 4, 5, 6, 7, 8

Section 21: Stopping Markers

(Page 5 of 8)

'Selective Door Operation' (SDO) is a system for limiting the amount of power operated passenger doors that can be opened on a train when stopped at a station with a short platform. In connection with this, square white boards bearing a figure below the initials "SDO" [21.92] were provided in 2004 at stations where Midland Mainline Class 222 'Meridian' units call. The figure on the board informs drivers of Class 222 units as to the number of cars that may have their doors opened at the platform concerned, so that the Selective Door Operation can be carried out accordingly. SDO boards at stations managed by Southern have a blue background [21.93]. Class 465 'Networker' units also have a facility for Selective Door Operation. Depending on the circumstances at a particular platform, a sign may be installed bearing the initials "SDO" with a letter "F", "R" or "B" for 'front', 'rear' or 'both', as appropriate [21.94].

[21.92] Selective Door Operation Board.
Area: Midland Mainline   Usage: High   Status: Current
[21.93] Selective Door Operation Board. Click Here for Photo
Area: Southern (subsequently Govia Thameslink Railway)   Usage: High   Status: Current
[21.94] Selective Door Operation Board applicable to Class 465 trains (e.g. "F" = Front).
Area: Various   Usage: Low   Status: Uncertain

Markers in connection with SDO are provided at certain stations between Salisbury and Exeter. Placed facing the track, they bear the words "selective door opening marker" together with a triangle pointing to the left or right as appropriate, inside which is stated the applicable direction, "Up" or "Down" [21.95].

[21.95] Selective Door Opening Marker (e.g. Down direction).
Area: Salisbury - Exeter   Usage: Low   Status: Current

In 2004, car stop markers with a letter "X" [21.96] were installed at each end of the short platform at Bearley station. These apply only to Chiltern Railways services formed of 3-car Class 165 and 168 units.

[21.96] "X Car Stop" Marker. Click Here for Photo
Area: Bearley   Usage: Low   Status: Current

At stations where trains are required to stop adjacent to platform monitors provided in connection with Driver Only Operation (DOO), the associated stop markers may bear the words "car monitors" [21.97] rather than the usual words "car stop".

[21.97] "Car Monitors" Marker.
Area: Various   Usage: Medium   Status: Current

The 'remote platform starting signal' identification signs provided at the new Gartcosh station in 2005 differed from previous designs in that they incorporated a downward pointing arrow [21.98]. Similar signs were installed at the reopened Laurencekirk station in 2009.

[21.98] 'Remote Platform Starting Signal' Identification Sign.
Area: Scotland Route   Usage: Medium   Status: Obsolescent

From 2005, Hull Trains began using the new Class 222 'Pioneer' units. Stop markers applicable to these trains have "HT 222" at the bottom [21.99].

[21.99] Class 222 Stop Marker.
Area: Hull Trains   Usage: Low   Status: Current

In May 2005, new stop markers were provided on Platform 4 at Brockenhurst station to facilitate occasional platform sharing. Two separate "S car stop" markers were installed, facing to Up direction trains. One with the legend "Plat 4A" was located at the north end of the platform, and one with the legend "Plat 4B" was located close to the middle of the platform [21.100].

[21.100] Car Stop Marker.
Area: Brockenhurst   Usage: Low   Status: Current

A new service known as 'Heathrow Connect' began in June 2005. Special stop markers were provided for the Class 360 electric multiple units that operate these services [21.101].

[21.101] Car Stop Marker.
Area: Heathrow Connect   Usage: Medium   Status: Current

When two 4-car Class 350 'Desiro' units are working together in multiple, 'Unit Deselect' (UDS) can be used at platforms that are too short to accommodate all the train doors. When Unit Deselect is used, only the doors on the front unit can be opened. At stations where this applies, "UDS" boards are provided [21.102]. The driver should bring the train to a stand at the "UDS" board to ensure that the leading cab door of the rear unit is on the platform. The conductor will operate Unit Deselect from the leading cab of the rear unit.

[21.102] Unit Deselect Board.
Area: Central Trains   Usage: Medium   Status: Current

Some stations on the Great Northern lines, operated by First Capital Connect, have car blue stop markers with the words "car stop" surrounded by a white rectangle [21.103].

[21.103] Car Stop Marker.
Area: First Capital Connect   Usage: Medium   Status: Uncertain

New stop markers were provided for the TransPennine Express Class 185 'Desiro' diesel multiple units, which entered service from March 2006 [21.104]. A similar blue background has subsequently been used to identify class-specific car stop markers relating to other classes of units.

[21.104] Car Stop Marker.
Area: Various   Usage: High   Status: Current

At some Northern Rail stations, a separate plate has been fitted below a standard car stop marker to indicate that it applies to a specific class of unit [21.105].

[21.105] Car Stop Marker with plate indicating applicable class of unit.
Area: Northern Rail   Usage: Medium   Status: Current

In December 2006, supplementary stop markers were provided at Southampton Central station in connection with platform sharing [21.106]. These apply to 2, 3 or 4 car trains stopping in the 'B' end of Platforms 2 or 3, and permit platform sharing with an 8-car EMU in the 'A' end. The platform number is specified on the signs, which have a white background to distinguish them from the ordinary stop markers.

[21.106] Supplementary Stop Marker.
Area: Southampton Central   Usage: Low   Status: Current