Reading a Timetable

[mountaingoatgreg]

Here is what I found in the Consolidated Code of Operating Rules from 1967. The modern ETT have the symbols included in them.

A automatic interlocking
B bulletins general orders;
C continuous office;
F fuel
I manual interlocking
J junction
K standard clock
M railroad crossing protected by signals or gates;
O agent or operator;
P dispatchers telephone;
Q radio installation;
R train register;
T turntable or wye;
U railroad crossing not protected by signals or gates;
W water;
X crossover;
Y yard limits
Z track scales

The Canadian ones may be a little different.