why don't SEPTA-NJT MUs have bells, loco-hauled cab cars do?

http://railroad.net/forums/viewtopic.php?f=69&t=122749 What's Up With The New Bells?

Patrick Boylan wrote:

Head-end View wrote:Why do railroads feel that diesel locomotives and maybe cab-cars need bells, but not electric MU's? If anything the electrics are quieter running and harder to hear approaching, so you'd think they'd need bells more than the diesels. I really don't get it..........

I'm another inquiring mind that wants to know how comes it diesels and locomotives get bells but not MU's?
Among the funniest sounds to me are the Riverline's Camden street running wayside horns which to me sound like ducks quacking. But the Riverline cars' bells and horns sound like real bells and horns. The grade crossing bells, which I think I read are electronic, sound like real bells.

DutchRailnut wrote:Read Code Of federal regulations 49 subchapter 229 I believe

The response I got in that thread wasn't very helpful. One person told us to look in Code Of federal regulations 49 subchapter 229, which I had no idea how to get. Somebody else posted that it doesn't require bells on anything. Other posts mentioned that Chicago, for example, does have bells on their mu's.
So repeating the question, why do SEPTA's and NJ Transit's self propelled electric multiple unit railroad cars have no bells while their locomotives and locomotive hauled cab cars do?

It may be that there is just no unified code nationwide across all rolling stock types for bell-ringing (it may vary from state to state, or even municipality), and/or apply only to locomotive or locomotive hauled cars, but not EMUs (which may have differences based on historical/regional factors).

Patrick Boylan wrote:http://railroad.net/forums/viewtopic.php?f=69&t=122749 What's Up With The New Bells?

DutchRailnut wrote:Read Code Of federal regulations 49 subchapter 229 I believe

The response I got in that thread wasn't very helpful. One person told us to look in Code Of federal regulations 49 subchapter 229, which I had no idea how to get.

http://www.ecfr.gov/cgi-bin/text-idx?c= ... ain_02.tpl

thanks, but I don't see anything in http://www.ecfr.gov/cgi-bin/text-idx?c= ... ain_02.tpl that immediately strikes me as referring to bells. Can you be more specific about what part I should read?

Patrick Boylan wrote:thanks, but I don't see anything in http://www.ecfr.gov/cgi-bin/text-idx?c= ... ain_02.tpl that immediately strikes me as referring to bells. Can you be more specific about what part I should read?

No, since I didn't tell you to read it.

could you please explain why you did post it in this thread? What did you plan on people reading this thread, especially me, to do with the link you gave?