fo RAILWAY CONSTRUCTION. 



worked by one engine only (or two engines coupled together), 

 carrying a staff, and wfien all points are locked by such staff. 



(6) At any intermediate siding connection upon a line 

 worked under the train staff and ticket system, or under the 

 electric staff or tablet system, where the points are locked by the 

 staff or tablet. 



(c) At intermediate stations, which are not staff or tablet 

 stations, upon a line worked under the electric staff or tablet 

 system : Sidings, if any, being locked as in (6). 



3. The signals at junctions to be on separate posts, or on 

 brackets ; and the signals at stations, when there is more than 

 one arm on one side of a post, to be made to apply the first, or 

 upper arm, to the line on the left, the second arm to the line 

 next in order from the left, and so on ; but in cases where the 

 main, or more important line, is not the one on the left, separate 

 signal -posts to be provided, or the arms to be on brackets. 

 Distant-signals to be distinguished by notches cut out of the 

 ends of the arms, and to be controlled by home or starting 

 signals for the same direction when on the same post. A 

 distant-signal arm must not be placed above a home or starting 

 signal arm on the same post for trains going in the same direction. 



In the case of sidings, a low short arm and a small signal 

 light, distinguishable from the arms or lights for the passenger 

 lines, may be employed, but in such cases disc signals are, as 

 a rule, preferable. 



Every signal arm to be so weighted as to fly to and remain 

 at danger on the breaking at any point of the connection 

 between the arm and the lever working it, 



4. On new lines worked independently, the front signal 

 lights to be green for " all right," and red for " danger ; " the 

 back lights (visible only when the signals are at " danger ") to 

 be white. 



This requirement not to be obligatory in the case of new lines 

 run over by trains of other companies using a different system 

 of lights. 



5. Facing points to be avoided as far as possible, but when 

 they cannot be dispensed with they must be placed as near as 

 practicable to the levers by which they are worked or bolted. 

 The limit of distance from levers working points to be 180 yards 

 in the case of facing points, and 300 yards in the case of trailing 

 points on the main line, or safety points of sidings. 



