
The table below shows the required locking positions.
A lever number or name followed by 'N' means the lever must be in normal position.
Followed by 'R' means the lever must be in reversed position.
Lever no. followed by * indicate locking for flank protection or overlap protection. Note that the position of these levers may sometimes be either normal or reverse, but the lever is locked in that position when the signal is cleared.
Signals in opposite direction giving direct access to the route as indicated must always be at danger and are not explicitly listed in the table below. Signals in opposite direction which do not give direct access but must be at danger for overlap protection are included, and are indicated by *.

Column "calling on" indicates if the signal can be cleared on occupied track. 
When signal requires 'caution', the signal must be kept at danger until the speed of the train is sufficiently reduced (approx. 10 mph).

--------------------------------------------------------------------
Sign|  Route to | Endsignal | Req levers |Call On | Notes
--------------------------------------------------------------------
    |           |           |            |        |  
                      Rugby Central
    |           |           |            |        |  
 01 |  Up Loop  |    04     |  02R,03R   |        |  
    |           |           |            |        |  
 04 |  Up Main  |  118/120  |    05R     |        | Also requires
    |           |           |            |        | TC Section "K" 
    |           |           |            |        | to be clear
    |           |           |            |        |  
 06 |  Up Main  |     -     |  07R,09R   |        | Up Main Distant
    |           |           |            |        |  
 07 |  Up Main  |    09     |02R,03N,17N,|        | Caution if 09N
    |           |           |    24N     |        |  (see note)
    |           |           | also 05N*  |        |  
    |           |           |            |        |  
 09 |  Up Main  |  118/120  |    05N     |        | Also requires
    |           |           |            |        | TC Section "K"
    |           |           |            |        | to be clear
    |           |           |            |        |  
 11 |  Up Main  |    25     |    05N     |        |  
    |           |           |            |        |  
    |  Up Loop  |     -     |    05R     |   Y    |  
    |           |           |            |        |  
 12 | Dn Siding |    21     |  13R,19N   |   Y    |  
    |           |           |            |        |  
    |  Up Main  |    15     |    13N     |   Y    | Only allowed to
    |           |           |            |        |  call on
    |           |           |            |        |
    |  Up Main  |    15     |  13N,15R   |        | 
    |           |           |    also    |        |
    |           |           |17R* or 19R*|        |  
    |           |           |            |        |  
 14 |  Dn Main  |    32     |    13R     |        |  
    |           |           |            |        |  
 15 |  Up Main  |    09     |  17R,22N   |        |  
    |           |           | also 05N*  |        |  
    |           |           |            |        |  
    | Dn Siding |    21     |  17N,19R   |   Y    |  
    |           |           |            |        |  
    |  Up Main  |    23     |  17N,19N   |        |  
    |           |           |            |        |  
 16 |  Dn Main  |    12     |    12R     |        |  
    |           |           |            |        |  
 18 |  Up Main  |     -     |    17N     |   -    |  
    |           |           |            |        |  
    |  Dn Main  |    32     |  13N,17R   |   Y    |  
    |           |           |            |        |  
 20 |  Dn Main  |    32     |13N,17N,19R |   Y    |  
    |           |           |            |        |  
    | Dn Siding |    14     |    19N     |   Y    |  
    |           |           |            |        |  
 21 |  Up Main  |    09     |22R,24R,41N |        |  
    |           |           | also 05N*  |        |  
    |           |           |            |        |  
    |   Spur    |     -     |  22N,41N   |   Y    |  
    |           |           |            |        |  
 23 |  Up Main  |    09     |  22N,24R   |        |  
    |           |           | also 05N*  |        |  
    |           |           |            |        |  
 25 |  Dn Main  |    32     |13N,17N,19N,|   Y    |  
    |           |           |  22N,24R   |        |  
    |           |           |            |        |  
    | Dn Siding |    20     |22R,24R,41N |   Y    |  
    |           |           |            |        |  
    |  Dn Yard  |     -     |22R,24R,41R |        |  
    |           |           |            |        |  
 31 |  Dn Main  |  L'worth  |            |        | Requires LC
    |           |           |            |        | Also controls
    |           |           |            |        |  Distant
    |           |           |            |        |  
 32 |  Dn Main  |    31     |     -      |        |  
    |           |           |            |        |  
 33 |  Dn Main  |    32     |13N,17N,19N,|        | Caution if 32N
    |           |           |  22N,24N   |        |  (see note)
    |           |           |            |        |  
 34 |  Dn Main  |    33     | 22N*,24N*  |        | Caution if 33N
    |           |           |            |        |  
 35 |  Dn Main  |     -     |32R,33R,34R |        | Dn Main Distant
    |           |           |            |        |  
 42 | Dn Siding |    20     |  22N,41N   |   Y    |  
    |           |           |            |        |  
    |  Dn Yard  |     -     |  22N,41R   |        |  
    |           |           |            |        |  
 43 |  Up Main  |    09     |22R,24R,41R |        |  
    |           |           | also 05N*  |        |  
    |           |           |            |        |  
    |   Spur    |     -     |  22N,41R   |   Y    |  
    |           |           |            |        |  
--------------------------------------------------------------------
    |           |           |            |        |  
                          Barby
    |           |           |            |        |  
101 |  Dn Main  |     -     |    103R    |        | Up Main
    |           |           |            |        |  Inner Distant
    |           |           |            |        | Slotted by 102
    |           |           |            |        | Also controls
    |           |           |            |        |  auto distant
    |           |           |            |        | (double yellow
    |           |           |            |        |    to green)
    |           |           |            |        |  
102 |  Dn Main  |   103     | 105N,107R, |        | Also controls
    |           |           | 109N,114N, |        |  auto distant
    |           |           |    116N    |        | (yellow to 
    |           |           |            |        |  double yellow)
    |           |           |            |        |  
103 |  Dn Main  |    34     |     -      |        | Also requires
    |           |           |            |        | TC section "N" 
    |           |           |            |        | to be clear
    |           |           |            |        |  
104 |  Dn Main  |   103     | 105R,107R, |        |  
    |           |           | 109N,114R, |        |  
    |           |           |    116N    |        |  
    |           |           |            |        |  
    |Barby Yd N |    -      | 105R,107R, |        | Does not require
    |           |           | 190R,114N  |        |  112R
    |           |           |            |        |  
106 |Barby Yd N |    -      | 107R,109R, |        | Does not require
    |           |           |    114N    |        |  112R
    |           |           |            |        | Caution required
    |           |           |            |        |  
108 |  Up Main  |   119     | 105R,107N, |        |  
    |           |           |    109N    |        |  
    |           |           |            |        |  
111 |  Up Main  |   119     | 105R,107N, |        |  
    |           |           |    109R    |        |  
    |           |           |            |        |  
    |Barby Yd S |    -      |    109N    |        |  
    |           |           |            |        |  
112 |  Dn Main  |   103     | 114R,116N  |        |  
    |           |           |            |        |  
    |Barby Yd N |    -      |    114N    |        |  
    |           |           |            |        |  
115 |  Dn Main  |   108     | 114N,116N  |        |  
    |           |           |            |        |  
    |Barby Yd S |    -      | 109N,114R, |        | Does not require
    |           |           |    116N    |        |  111R
    |           |           |            |        |  
118 |Barby Yd S |    -      | 109N,114R, |        | Does not require
    |           |           | 116R,117R  |        |  111R
    |           |           |            |        | Caution required
    |           |           |            |        |  
119 |  Up Main  |B'ton&W'by |            |        | Requires LC 
    |           |           |            |        | Also controls 120
    |           |           |            |        |  (yellow to green)
    |           |           |            |        | Also controls 
    |           |           |            |        |  auto distant
    |           |           |            |        |  (double yellow
    |           |           |            |        |    to green)
    |           |           |            |        |  
120 |  Up Main  |   119     | 105N,116N, |        | Clears to yellow
    |           |           |    117R    |        | Green slotted by
    |           |           |            |        |  119
    |           |           |            |        | Also controls
    |           |           |            |        |  auto distant
    |           |           |            |        |  (yellow to
    |           |           |            |        |    double yellow)
    |           |           |            |        |  
------------------------------------------------------------------

Notes
-----
Signals 07 and 33 :
Caution for these signals is not required for trains booked to stop
or terminate at Rugby.

FPL.
----
Reverse position is FPL locked (except for 107, see table).

--------------------------
    FPL    | locks switch
--------------------------
           |    
         Rugby
           |
     02    |   03
           |
         Barby
           |
    107    | 105 when N
           | 109 when R
           |
    117    |  116
           |
--------------------------
