Signals at interlockings

[NW Mailing List]

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? 

Jim,
     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