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Purpose of rear red lights


Dirty harry

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Dirty harry

I noticed yesterday that a police van(police Scotland) escorting an orange walk, past my house had it's rear red lights flashing.  I was just wondering what the purpose of them is?

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They are designed to be inadvertently left on for half the shift thereby leaving you wondering why motorists behind you are driving so erratically.

I believe it's for warning other vehicles that the police vehicle is moving slowly, or is stopped.

Not all vehicles are setup with the ability to activate just front or rear blues and sometimes the rear reds are far last distracting to those around hence stopping people from getting distracted bein

Mazza

I believe it's for warning other vehicles that the police vehicle is moving slowly, or is stopped.

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DB11

Rear reds are normally when you are off road or in a closed lane (mainly hard shoulder on the motorway or a lay by.. I can't think of many examples where I've used them other than that. And even lay by I didn't think was necessary)

Rear blues and rear reds are for when you are stationary in a live lane.

 

That's the guidance I was taught when I did my basic authority. Maybe it differs between forces

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Yoshay

Not all vehicles are setup with the ability to activate just front or rear blues and sometimes the rear reds are far last distracting to those around hence stopping people from getting distracted being nosey. They are also far less bright but provide a presence for vehicles behind.

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MerseyLLB

They are designed to be inadvertently left on for half the shift thereby leaving you wondering why motorists behind you are driving so erratically.

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  • Haha 3
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Dirty harry

Thank you to everyone for your replies.  ;) 

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BlueBob

Pretty much anyone can and do use flashing ambers, whether they are lawfully fitted & used or not.  Hence the complaint that ambers don't stand out in traffic as a warning. 

Blues were used in an ever widening range of vehicles 

flashing rear reds, so far seem to be limited to police /HA and occasional slippage.  IMO, the reason rear reds are affective is they are a light set up that are different and stand out, especially as it's the colour red which also attracts the observers attention.

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prolixia

Another point is that blue lights tend to distract motorists.  They suggest that something exciting is going on and everyone wants to see what's going on.

Putting the rear reds on when stopped warns other road users approaching from behind without creating quite the same spectacle.

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The Greater Good

Sorry for resurrecting this thread but flashing reds are only allowed on a police vehicle that is moving, other emergency vehicles aren't allowed to use them whilst moving. 

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1 hour ago, The Greater Good said:

Sorry for resurrecting this thread but flashing reds are only allowed on a police vehicle that is moving, other emergency vehicles aren't allowed to use them whilst moving. 

Highways are permitted to use them.

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Sorry for resurrecting this thread but flashing reds are only allowed on a police vehicle that is moving, other emergency vehicles aren't allowed to use them whilst moving. 


Not the case, we are instructed to use rear reds whilst stationary on the hard shoulder I believe.
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BlueBob

Mazza, I think you are agreeing with TH, that you can use them whilst stopped  and TBH, if your authorised to have them whilst stopped, then using them whilst moving under the right circs can be quite understandable, albeit not exactly within the regs.  Its the vehicles that are not permitted to have them fitted and yet have them not only whilst stopped but also whilst on the move that are the naughty ones.  

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The Greater Good

I've seen plenty of police cars responding to incidents with the reds activated whilst at speed, I would have thought that it would have diminished the effect' if they suddenly reached the scene and drivers behind typical looking no further than their nose have to brake sharply

 

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Ether
10 minutes ago, Sir Penguin said:

You mean I've been using them wrong this whole time?

Watch moment police car stops in McDonald's drive-through with lights flashing - to order breakfast

https://www.mirror.co.uk/news/uk-news/watch-moment-police-car-stops-7064527

 

We have all left rear reds on at some point and realised ages after. 

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