In message
"John Rowland" wrote:

rail wrote:
In message
"John Rowland" wrote:

rail wrote:
[snip]
Are you aware why they switch the sirens off once they have crossed
the junction?

It could be that the emergency has been cancelled, but if you have an
explanation for why this started happening after the Menezes incident,
I'd like to hear it.



It didn't start after the Menezes incident, it is to reduce the amount of
noise polution, which has the advantage of making the siren more
noticeable when it is used. If you here a siren going continuously for a
while you tend to blank it out. Fire engines and ambulances do the same
thing.

You're talking about when they put the siren off and leave the lights
flashing. I said "I have frequently seen police vehicles pull up at a red
light, wait for ten seconds, get bored, put on the flashing lights, drive
through the junction and then put the lights off again"

I dispute that you have seen it frequently.

About the Greenwich incident I should have said "Once a police car even
pulled up behind me in Greenwich town centre and put the lights and sirens
on (at 3am!) causing me to drive through the red light out of their way,
and then they drove through the lights and put the lights and sirens off."



But you didn't say that. Looks like you are changing the story to fit your
prejudices.

--
Graeme Wall

This address not read, substitute trains for rail
Transport Miscellany at www.greywall.demon.co.uk/rail