Re: [CBQ] Question on Rule 501I - Permissive Signal

["Winton" <runextra@gmail.com>]

>Assuming that the train did not have to stop (at a Permissive signal), in 
>actual practice, how did Restricted Speed differ from the speed through a Rule 
>501E "Approach" (yellow) signal?

Huh? The 2 are completely different. The 501E Approach only requires that you 
be prepared to stop at the NEXT signal. The block is clear from the 501E 
Approach signal  to the next signal. You may proceed at track speed as long as 
you can get stopped before passing the next signal. (Later Approach rules 
(depending upon the era, required that you immediately reduce to 30, 35, 40mph 
upon passing the 501E Approach signal). 
A Permissive signal requires that you operate at Restricted Speed through the 
entire block, at a speed of 20mph OR MUCH LESS  depending upon conditions of 
site distance. Basically don't hit ANYTHING. The block might be occupied by 
other trains, cars, engines, MOW, open switches, broken rail, etc.

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