Questions, Answers & Tips -
operators even if they have never run on the layout before. No
special instructions or handling for these push buttons.
For the more electronically sophisticated railroader, Alan of
offers and arrangement using SPST momentary
contact switches and an inexpensive latching relay.
You can have as many push button switches as you like for the
same Tortoise. Press any button and the Tortoise will throw com-
pletely, even if you only tap the switch. No need to hold down
the button and the Tortoise stays stalled, so no creep-back of the
points. The original post describing the circuit is here:
(see video on the prior page).
For more information, see the complete thread at
Modifying track warrants
Q.
With timetable and train order authority, if an error is made
with a train order, a totally new order is written. A train order
once issued can never be modified. A new order must be
written to amend an already issued one. Can a track warrant
be amended after it's issued? Why would the railroads have
changed that type of policy? It seems unsafe to modify a war-
rant once it's issued.
– Ken Leaver
A.
As always, the best answer depends on knowing the time
period, the railroad and the rule book involved. Several railroad-
ers offer answers from their work experiences.
Railroader Dave Husman said a "track warrant for bulletins" can
have the engine number changed. A movement track warrant can
have the limits reduced (a "roll up"). It can have a line voided.
Issuing a track warrant for movement and then adding an "after
arrival" later would be a rules violation on a real railroad.
Engineer Ken Rickman added, “The only modification I have ever
MRH-Feb 2013
