Class
of
Train
Head Lamps
(White Lights)
Description of Trains
Beats
on
Bell
How to be given
A
Express Passenger Train, Breakdown Van Train going to clear the line, or Light Engine going to assist disabled train, or empty Coaching stock train timed at Express Passenger speed
4
consecutively
B
Ordinary Passenger train, Mixed train or Breakdown Van train not going to clear the line.
------------------------------------------------------------------
*Branch passenger train.
------------------------------------------------------------------
Rail Motor Car, Auto train, or Streamline Rail Car.

4
--
1
--
7

3 pause 1
------------
1 pause 3
-----------
3 pause 1 pause 3
C
Parcels, Newspapers, Fish, Meat, Fruit, Milk, Horse, Cattle, or Perishable train, composed entirely of Vacuum-fitted Stock, with the vacuum pipe connected to engine.
-----------------------------------------------------------------
Express freight, Livestock, Perishable, or ballast train partly Vacuum-fitted, with not less than one-third vacuum-braked vehicles connected by vacuum pipe to engine.
5
--

8
consecutively
----------------

4 pause 4
D
Express Freight or Ballast train complying with the instructions in regard to Freight trains conveying a stipulated number of vacuum-braked vehicles (not less than 4) connected by vacuum pipe to engine and authorised to run at a maximum speed of 35 m.p.h.
------------------------------------------------------------------
Empty Coaching Stock train not specially authorised to carry "A" headlamps.


7

--
5


2 pause 2 pause 3

----------------------
2 pause 2 pause 1
E
Express Freight, fish, meat, fruit or cattle train (not conveying Class 1 traffic, or other traffic specially prohibited), or Ballast train, not running under "C" or "D" headlamp conditions, or special train conveying 36-ton Breakdown crane not proceeding to an accident.
5
3 pause 2
F
Through fast Freight train not running under "C", "D" or "E" headlamp conditions, conveying through load
5
1 pause 4
G
Light Engine or Light Engines coupled together, or Engine and Brake.
5
2 pause 3
H
Freight, Mineral or Ballast train or train of empties carrying Through load to destination.
8
3 pause 4 pause 1
J
Freight, Mineral or Ballast train stopping at intermediate stations.
3
consecutively
K
Ballast, Freight or Inspection train requiring to stop in section.
------------------------------------------------------
Branch Freight.
5
--
3
1 pause 2 pause 2
----------------------
1 pause 2
PASSENGER AND FREIGHT TRAIN INSTRUCTIONS

(Taken from the GWR  appendix to the rule book 1936)

ENGINE HEAD LAMPS

(1) The thick type letter shown against each class of Head Lamp indication thus :- "A, B, C," etc. is placed at the head of the columns in the Working Time Tables to indicate what head lamps that particular train is to carry.

Note.- The Trainmen will be responsible for seeing that their trains carry the proper Head Lamps according to class.

(2) The same system of head lamps applies on relief lines as on main lines.

(3) The object of the distinguishing head lamps on the engines is to ensure prompt and sufficient notice being given to stations in advance in order that the trains may be dealt with according to their importance. Signalmen and all others concerned are therefore requested to see that trains are signalled in accordance with the head lamps, and the appropriate "is line clear ? " bell codes.

(4) Head lamps carried by trains assisted by an engine in front must be as under :-

For distances up to 12 miles.. One head lamp only to be carried at foot of chimney by the leading engine. Train engine to carry its usual, i.e. booked headlamps.

For distances over 12 miles.. Front engine only to carry head lamps, and those to be the head lamps applicable to the train.

(5) Except where special arrangements are in force to the contrary, other Companies' Engines working over the Great Western system must also use these head lamps, and Station Masters, Signalmen and others concerned must report to their Superintendant or District Traffic Manager any instances where this is not done.

(6) No alteration in the Standard head lamps is permitted unless specially authorised, and if it be found necessary in practice for Signalmen at congested points to know when other classes of trains are in the neighbourhood, such exceptional instances must be immediately to the Divisional Superintendant or District Traffic Manager, who will arrange "Bell" signals to meet them.

(7) The head lamps will be carried on the same lamp irons day and night, the difference being that they will be extinguished by day and lighted at night and during fog or falling snow.
DIAGRAM SHOWING CLASSIFICATION, HEAD LAMPS AND CORRESPONDING BELL SIGNALS
1 Call attention.
Number of beats in rapid succession. Emergency call attention.
2 pause 6 pause 2 Train conveying out of gauge or exceptional load.
2 pause 1 pause 2 Trolley requiring to go into or pass through tunnel.
2 Consecutively Train entering section.
1 pause 2 pause 1 Train approaching.
3 pause 5 pause 5 Section clear but station or junction blocked.
2 pause 2 pause 2 Line clear to clearing point only.
2 pause 2 Engine assisting in rear of train.
2 pause 1 pause 3 Engine arrived.
3 pause 2 pause 3 Train drawn back clear of section.
6 Consecutively Obstruction danger.
2 pause 4 Blocking back inside home signal.
3 pause 3 Blocking back outside home signal.
1 pause 2 pause 3 Blocking back outside home signal for train already in section.
7 Consecutively Stop and examine train.
3 pause 5 Cancelling 'is line clear' or 'train entering section'.
 
9 to box in advance
4 pause 5 to box in rear
Train passed without tail lamp.

5 pause 5 Train divided.
1 pause 5 pause5 Shunt train for following train to pass.
2 pause 5 pause 5 Train or vehicles running away on wrong line.
4 pause 5 pause 5 Train or vehicles running away on right line.
5 pause 5 pause 5 Opening of signal box.
7 pause 5 pause 5 Closing of signal box.
16 Consecutively Testing block instruments, bell or gongs.
8 pause 5 pause 5 Time.
9 pause 5 pause 5 Lampman or fog signalman required.
5 pause 5 pause 5 pause 5 Testing controlled or slotted signals.
3 pause 4 Take slot off - train waiting.

 

 
* "B" head lamps are subject to alteration in case of through trains working over Branches as shewn in the service books
Some further bell codes from the G.W.R. Regulations for Train Signalling Double and Single Lines.
GWR headlamp and bell codes
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