353
THE HONGKONG GOVERNMENT GAZETTE, SEPTEMBER 2, 1910.
CHAPTER VIII.
USE OF ELECTRICAL INSTRUMENTS ON SINGLE
LINES GENERAL PROVISIONS.
73. Trains may be worked by means of
(a) electric token instruments, of such construction that only one of the tokens applying to the same section
can be in use at the same time,
(b) electric speaking instruments.
Electric speaking instruments must be provided at every
station.
STATIONS AT WHICH ELECTRIC BLOCK INSTRU-
MENTS ARE PROVIDED.
Trains.
74.-Every ruming train must, in its progress from station to Signalling of station, be signalled on the electric block instruments.
75.-No person shall operate the token instruments or the Certificate of
Competence. block instruments until he has passed a satisfactory examination, and unless he holds a certificate of competency granted by a railway servant appointed in this behalf by the Railway Administration.
76.--The following is the Code of Bell Signals to be used with the system of electrical instruments:
SINGLE LINE BLOCK INSTRUMENTS.
CODE OF BELL SIGNALS.
The following code of Bell Signals must be used, and weh Signal must be given slowly and distinctly.
INDICATION.
CODE.
How SIGNALLED.
How ACKNOWLEDGED.
}
Attention.
Is line clear for
Mail Train
Passenger Train
Mixed Train
Goods Train
Ballast Train
Fuel or other Train Light Engine Special Passenger Train
Train entering Section...
Train out of Section
Line Blocked or ob-
struction Signal ..... f
Ballast train or other returning or con- celling block
Testing Signal..
Vehicles Running away
Error Signal
C
One beat.
Three beats.
One stroke.
Two pause one.
Do.
Do.
By repeating the Signal, if time is clear, if not clear by sending ob- struction Signal
64%-800-401
Da
Two pause two.'
Do.
pause one.
Two beats.
One pause two.
Repeating Signal. IKY.
Three pause
Do.
three.
Do.
Two pause two,
Four beats.
Do.
Three pause
three pause
three.
Do.
Eight beats.
Do.
(1) Each signal received must be acknowledged by the sending Acknowledg of its authorised acknowledgment.
(2) No signal shall be acknowledged until it is clearly under- stood.
(3) A signal shall not be considered to be complete until it is acknowledged.
ment of Signai
"
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