Signals at interlockings

NW Mailing List nw-mailing-list at
Mon Aug 12 20:42:25 EDT 2013

On 8/12/2013 6:11 PM, NW Mailing List wrote:

> Do you think it really was just to same the cost of two more lamps on

> the lower arm?

It involved much much more than the cost of two lamps. Today, you
would probably need an entire new computer program to make things work.
Maybe Ben Blevins can enlighten as to what all would be needed.
All speeds (including curves) over the district were listed in order in
the ETT. Some speeds inside industries were shown in the ETT under a
special instructions for that industry.

Jimmy Lisle

More information about the NW-Mailing-List mailing list