
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
------------------------------------------------------------------
    |           |           |            |        |  
  1 | Dn Main   |    -      |02R,03R,04R,|        | Down Main
    |           |           |    06R     |        |  Distant
    |           |           |            |        |  
  2 | Dn Main   |   3/7     |    18N     |        | Caution if 
    |           |           |   also     |        |  03N and 07N
    |           |           | *11N,*12R, |        |  (see note)
    |           |           |    *31N    |        |  
    |           |           |    and     |        |  
    |           |           |  *13N or   |        |  
    |           |           | *13R,*22N  |        |  
    |           |           |            |        |  
  3 | Dn Main   |    4      |  12R,31N   |        | Caution if 04N
    |           |           |   also     |        |  (see note)
    |           |           |   *33N     |        |  
    |           |           |            |        |  
  4 | Dn Main   |    6      |    33N     |        | Caution if 06N
    |           |           |            |        |  
  5 | Dn Main   |    6      |27N,28R,29R,|        | Caution if 06N
    |           |           |    33R     |        |  
    |           |           |            |        |  
  6 | Dn Main   |Par Harbour|            |        | Requires LC
    |           |           |            |        |  
  7 | Branch Plf|   5/8     |12R,13R,14R,|        | Caution if
    |           |           |19R,20R,23N |        |  05N and 08N
    |           |           |   also     |        |  (see note)
    |           |           | *22N,*28R, |        |  
    |           |           |    *42N    |        |  
    |           |           |            |        |  
  8 | Dn Branch |    9      |27N,28R,29N,|        | Caution if 09N
    |           |           |36N,38R,42N |        |  
    |           |           |            |        |  
  9 | Dn Branch | St.Blazey |  38R,42N   |        | Requires LC
    |           |           |            |        |  
 10 | Dn Main   |    4      |11R,12R,13N,|  Yes   |  
    |           |           |    31N     |        |  
    |           |           |            |        |  
 10 | Up Main   |   10A     |    11N     |        |  
    |           |           |            |        |  
 10A| Up Main   |    32     |13N,14R,19N |  Yes   |  
    |           |           |            |        |  
    | Branch Plf|   5/8     |13N,14R,19R,|  Yes   |  
    |           |           |    23N     |        |  
    |           |           | also *28R  |        |  
    |           |           |            |        |  
    |   Loop    |    26	    |13N,14R,19R,|  Yes   |  
    |           |           |22R,23R,71N,|        |  
    |           |           |    75N     |        |  
    |           |           |            |        |  
    |Goods Shd E|    -      |13N,14R,19R,|        |  
    |           |           |  23R,71R   |        |  
    |           |           |            |        |  
 15 | Up Main   |    51     |11R,13N,31N |        |  
    |           |           |            |        |  
 16 | Dn Main   |Shunt Limit|11N,13N,31N |        |  
    |           |           | also *18N  |        |  
    |           |           |            |        |  
    |Dn Goods Lp|Shunt Limit|    31R     |  Yes   |  
    |           |           |            |        | 
 17 |Dn Goods Lp|    30     |    18R     |        |
    |           |           |            |        |  
 21 | Branch Plf|   5/8     |19N,22N,23N |  Yes   |  
    |           |           |            |        |  
    |   Loop    |    26     |22R,23N,71N,|  Yes   |  
    |           |           |    75N     |        |  
    |           |           |            |        |  
    |Goods Shd E|    -      |22R,23N,71R |        |  
    |           |           |            |        |  
 24 | No.1 Spur |    -      |19N,20R,22R,|  Yes   |  
    |           |           |    23N     |        |  
    |           |           |            |        |  
 25 | Dn Main   |Shunt Limit|11N,13R,19N,|        |  
    |           |           |22R,23R,71N |        |  
    |           |           |            |        |  
    | Up Main   |    51     |11N,13N,19R,|        |  
    |           |           |22R,23R,71N |        |  
    |           |           |            |        |  
    | No.1 Spur |    -      |22R,23N,71N |  Yes   |  
    |           |           |            |        |  
    | No.2 Spur |           |22N,23N,71N |  Yes   |  
    |           |           |            |        |  
 25A| Dn Main   |Shunt Limit|11N,13R,19N,|        |  
    |           |           |22N,23R,71R |        |  
    |           |           |            |        |  
    | Up Main   |    51     |11N,13N,19N,|        |  
    |           |           |22N,23R,71R |        |  
    |           |           |            |        |  
    | No.1 Spur |    -      |22R,23N,71R |  Yes   |  
    |           |           |            |        |  
    | No.2 Spur |    -      |  22N,71R   |  Yes   |  
    |           |           |            |        |  
 26 | Dn Main   |    6      |27R,29R,33R |        |  
    |           |           |            |        |  
    |   Loop    |    40     |  27N,37N   |        |  
    |           |           |            |        |  
 30 | Dn Main   |    4      |    31R     |  Yes   |  
    |           |           |            |        |  
 32 | Dn Main   |    6      |  29N,33R   |        |  
    |           |           |            |        |  
    | Up Main   |    47     |  29N,33N   |        |  
    |           |           |            |        |  
 34 | Dn Main   |  15/16    |    33N     |  Yes   |  
    |           |           |            |        |  
    | Up Main   |    54     |  29N,33R   |  Yes   |  
    |           |           |            |        |  
    | Branch Plf|  52/24    |27N,29R,33R |  Yes   |  
    |           |           | also *20R  |        |  
    |           |           |            |        |  
    |   Loop    |    25     |27R,29R,33R,|  Yes   |  
    |           |           |    75N     |        |  
    |           |           |            |        |  
    |Goods Shd W|    -      |27R,29R,33R,|        |  
    |           |           |    75R     |        |  
    |           |           |            |        |  
 35 | Dn Branch |    9      |  36R,37R   |        |  
    |           |           |            |        |  
 39 | Branch Plf|  52/54    |27N,29N,36N |  Yes   |  
    |           |           |            |        |  
    |Goods Shd W|    -      |27N,36R,37R,|        |  
    |           |           |    75N     |        |  
    |           |           |            |        |  
 40 | Up Branch |Shunt Limit|  41R,42N   |        |  
    |           |           |            |        |  
 44 |   Loop    |    25     |27N,37N,41R,|  Yes   |  
    |           |           |42N,43R,75N |        |  
    |           |           |            |        |  
 44 |Goods Shd W|    -      |27N,37N,41R,|        |  
    |           |           |42N,43R,75R |        |  
    |           |           |            |        |  
 45 | Up Main   |    51     |13N,14R,19R,|  Yes   | Callon for 52
    |           |           |  20R,23N   |        |  
    |           |           |            |        |  
 46 | Branch Plf|   52/24   |27N,29N,36N,|  Yes   | Callon for 53
    |           |           |38R,39R,42R,|        | Requires
    |           |           |    43R     |        | section 07
    |           |           |   also     |        | occupied 
    |           |           | *20R,*24N, |        |  
    |           |           | *45N,*52N  |        |  
    |           |           |            |        |  
 47 | Up Ref Sdg|    -      |  49R,81N   |  Yes   |  
    |           |           |            |        |  
    | Carr Sdg  |    -      |  49R,81R   |  Yes   |  
    |           |           |            |        |  
 49 | Up Main   |    54     |29N,33N,48R |  Yes   |  
    |           |           |            |        |  
 50 | Up Main   |    51     |11N,13N,19N |  Yes   | Callon for 54
    |           |           | also *51N  |        |  
    |           |           |            |        |  
 51 | Up Main   | Treverrin |            |        | Requires LC
    |           |           |            |        |  
 52 | Up Main   |    51     |11N,13N,14R,|        | Caution if 51N 
    |           |           |19R,20R,23N |        |  
    |           |           |            |        |  
 53 | Branch Plf|   52/24   |27N,29N,36N,|        | Caution if 52N
    |           |           |38R,39R,42R,|        |  (see note)
    |           |           |    43R     |        |  
    |           |           |   also     |        |  
    |           |           | *20R,*45N  |        |  
    |           |           |            |        |  
 54 | Up Main   |    51     |11N,13N,19N |        | Caution if 51N
    |           |           |            |        |  
 55 | Up Main   |    54     |29N,33N,48N |        | Caution if 54N
    |           |           |   also     |        |   (see note)
    |           |           | *11N,*13N, |        |  
    |           |           | *19N,*50N  |        |  
    |           |           |            |        |  
 56 | Up Main   |    -      |51R,54R,55R |        | Up Main
    |           |           |            |        |  Distant
    |           |           |            |        | Slotted by 
    |           |           |            |        |  Par Harbour
    |           |           |            |        |  
------------------------------------------------------------------
    |           |           |            |        |  

                          Flag positions               

    |           |           |            |        |  
 2SP|   Loop    |    26     |22N,23N,71N,|  Yes   |  
    |           |           |    75N     |        |  
    |           |           |            |        |  
 GSH|   Loop    |    26     |    75R     |        |  
    |           |           |            |        |  
    | Dn Branch |    9      |36R,37R,75N |        |  
    |           |           |            |        |  
------------------------------------------------------------------

Notes
-----

For signals 03, 07, 53 and 55 :
Caution is not required if trains is booked to stop or terminate
in Par station.


Additional locking requirements.
--------------------------------

-----------------------
 position  | requires
-----------------------
           |           
    42     |   41N     
           |      
-----------------------

FPL.
----

Reverse position is FPL locked.
As various signals locks FPL's as overrun protection,
the full list of signals which locks an FPL is also shown.

----------------------------------------------------
    FPL    | locks switch | locked by signal
----------------------------------------------------
           |              |
    12     |      13      | 02,03,07,10 to Dn Main
           |              |
    14     |     13,23    | 07,10A to Branch Plf, 
           |              |   Loop, Goods Shed,
           |              | 45,52
           |              |
    20     |      19      | 34 to Branch Plf,
           |              | 44,45,52,
           |              | 53 to Branch Plf
           |              |
    28     |      29      | 05,07 to Branch Plf,
           |              | 08,10A to Branch Plf
           |              |
    38     |     36,42    | 08,09,46,52
           |              |
    43     |      42      | 44,46,52
           |              |
---------------------------------------------------

