Have done some Internet exploring on CNJ Signal 290, which was, of course, “Restricting,” and took my best guess at CNJ Signal 290A. Maybe CNJ Signal 290A was the equivalent of NORAC Signal 288.
It seems a signal that is a flashing indication (see http://www.railfanusa.com/info/norac-signals.html
) usually corresponds to a letter designation. NORAC signal aspects 281b, 281c, 282a, are examples of this, even though NORAC signal aspect 283a is an exception.
NORAC signals 286 and 288 also flash, but are not included in the CNJ 1954 rules at http://raildata.railfan.net/java/CNJCol ... gnals.html
. Perhaps they were created after 1954.
NORAC signal 288 is a variation of 290, where the yellow light flashes instead of remaining constant. Signal 290 means “Proceed at Restricted Speed until:
1) Passing a more favorable fixed signal,
2) One train length past location where more favorable cab signal is received, or
3) Entering non-signalled DCS territory."
Entering non-signaled DCS territory was applicable for the Barnegat Branch – there were no fixed wayside signals in 1968 on the Branch. The main line of the Southern Division, however, did have some fixed wayside signals. I recall one on the way towards Whitings.
Here’s the definition of DCS: “FORM D Control System (DCS) A block system, signaled or non-signaled, in which the movement of trains outside of yard limits is authorized by Form D.”
Perhaps CNJ wanted to indicate Restricting, but also to indicate the need to stop and pick up a form D. Which, in their case, is a “Clearance Card Form A,” as seen at http://raildata.railfan.net/cnj/bor/homebor.html