
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
------------------------------------------------------------------
    |           |           |            |        |  
  3 | Up Siding |    10     |01R,02R,06N |        |  
    |           |           |            |        |  
    |    Up     |    18     |01R,02N,11N,|        |  
    |           |           |  19N,31N   |        |  
    |           |           |            |        |  
    |   Down    |    30     |01N,19N,20N |        |  
    |           |           |            |        |  
  4 | Tebay Dn  |    26     |  01R,02N   |        |  
    |           |           |            |        |  
  5 | Up Siding |     -     |    02N     |        |  
    |           |           |            |        |  
    | Tebay Dn  |    26     |  01R,02R   |        |  
    |           |           |            |        |  
  7 |    Up     |    18     |08R,11N,19R,|        |  
    |           |           |    31N     |        |  
    |           |           |            |        |  
  9 | Dn Siding |     -     |    08R     |        |  
    |           |           |            |        |  
 10 |    Up     |    18     |  11R,31N   |        |  
    |           |           |            |        |  
 12 |   Dock    |     -     |  06R,11R   |        |  
    |           |           |            |        |  
    | Up Siding |    05     |  06N,11N   |        |  
    |           |           |            |        |  
    | Tebay Up  |    04     |  11N,19N   |        |  
    |           |           |            |        |  
    |    Up     |    09     |  11N,19R   |        |  
    |           |           |            |        |  
 13 |    Up     |     -     |14R,15R,18R |        | Up Tebay Distant
    |           |           |            |        |  
 14 | Tebay Up  |    15     |            |        | Caution if 15N
    |           |           |            |        |  
 15 |    Up     |    18     |01N,02N,11N,|        | Caution if 18N
    |           |           |  19N,31N   |        |  
    |           |           |            |        |  
 16 |    Up     |     -     |  17R,18R   |        | Up Distant
    |           |           |            |        |  
 17 |    Up     |    18     |08N,11N,19R,|        | Caution if 18N
    |           |           |    31N     |        |  
    |           |           |            |        |  
 18 |    Up     |  Eldroth  |            |        | Requires LC
    |           |           |            |        |  
 21 |   Down    |  Skew X   |            |        | Requires LC
    |           |           |            |        |  
 22 |   Down    |    21     |    20R     |        | Caution if 21N
    |           |           |            |        |  
 23 |   Down    |  22/27    |    31N     |        | Caution if
    |           |           |            |        |  21N and 27N
    |           |           |            |        |  
 24 |   Down    |    -      |21R,22R,23R |        | Down Distant
    |           |           |            |        |  
 25 | Tebay Dn  |  Ingleton |            |        | Requires LC
    |           |           |            |        |  
 26 | Tebay Dn  |    25     |    28N     |        | Caution if 25N
    |           |           |            |        |  
 27 | Tebay Dn  |    26     |01N,19N,20N |        | Caution if 26N
    |           |           |            |        |  
 29 | Tebay Dn  |    25     |  28R,G1-R  |        |  
    |           |           |            |        |  
 30 |    Up     |    18     |    31R     |        |  
    |           |           |            |        |  
 32 |    Up     |    12     |    31N     |        |  
    |           |           |            |        |  
    |   Down    |  22/27    |    31R     |        |  
    |           |           |            |        |  
------------------------------------------------------------------
    |           |           |            |        |  

                          Flag positions               

    |           |           |            |        |  
 DCK| Up Siding |    10     |    06R     |        |  
    |           |           |            |        |  
 UPS| Up Siding |    10     |  02N,06N   |        |  
    |           |           |            |        |  
 TBD|  Tebay Dn |    03     |  28R,G1-N  |        |  
    |           |           |            |        |  
    | Dn Siding |     -     |  28R,G1-R  |        |  
    |           |           |            |        |  
------------------------------------------------------------------

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

-----------------------
 position  | requires
-----------------------
           |           
    19     |   20R     
           |      
-----------------------

Groundframe for access to Down Siding from Tebay Down :

Groundframe release : 28
Note that 28 is locked when the following signal is cleared : 26
Also note that flag TBD always needs 28R, for both routes.

