The question is...

www.telegraph.co.uk/motoring/news/8521769/Smart-traffic-lights-to-stop-speeders.html

how fast do I have to be travelling to trigger the sensor but still make the
lights at green )

 

I can see them behaving like disco lights in some areas

 

Also rather depends if you care about red lights.

 

Similar to what the have in Spain isn't it ?

 

**** knows but if I am going down the road being a good boy and keeping to
the limit why the **** should I be inconvenienced by some selfish **** who
2 yards before the line trips the lights and gets not just himself but
INNOCENT little old me stopped as well?

Some fucking idiot in some fucking traffic department has not thought this
through very well. So nothing unusual there then is there.

 

You really are, aren't you?

From the article:

?We welcome trials of technologies other than cameras to deter speeding
drivers and this sort of system is already extensively used in Spain and
Portugal".

 

They got some bright lad in to the traffic light department in
Sunderland in the late Seventies. He set the system up so you could get
successive green lights right through the town centre and out the otehr
side - if you hit them right.

Tragically, if you hit the first one as it changed while you were
rolling at the limit, you'd then have to accelerate to 35mph to get them
in sequence.

 

http://www.theregister.co.uk/2011/02/28/traffic_light_report/

 

Certainly makes drag racing easier to stage.

 

Pretty much guaranteed to be a camera to catch that.

 

Not in Portugal. There are so many, they wouldn't have the resources.
Lights in the middle of nowhere, no road junction, just an automated
stoplight. How many can you take before you start running them?

 

Linked traffic signal systems predate the late 70's and prelocate to
places of far more world significance than Sunderland. FFS I was working
on computer linked versions in the west end of london before that time.

For a long one Marylebone road was a very well designed one. 27-29 got
you all the way from one end to the other without a stop. There was
another window at about 60 but it did mean having to be a little
enthusiastic on the throttle and taking liberties with some of the ambers.
That was only going west though, there was no way you could do the journey
without a stop going east.


The Finchley Road one was a nightmare. A very ambitious scheme to have
dynamically changing timings to reflect not just the difference in N/S
flow during the morning and evening rush hours but also to add in a bit of
E/W variation into the mix. A valve analogue computer with some very
detailed circuit diagrams printed on A1 sized paper as supporting
documentation but not a single word regarding function filling 4 boxes at
the bottom of the hill and 2 at every junction it covered was what they
came up with. I eventually got it working which surprised everybody but
couldn't get it to work anywhere near what could be defined as balanced
which didn't surprise me in the fucking least. Ambitions beyond the
bounds of current technology that one was. Piece of piss these days of
course, you could do the whole thing as an Iphone app.

 

Here's a fact I've not bothered to check which someone told me last week:
An iPad2 out benchmarks a cray2.

 

In MIPS, almost certainly. In FLOPS, probably not.

 

It would have beat it in gigaflops too.

http://www.tuaw.com/2011/05/09/ipad-2-would-have-bested-1990s-era-supercomputers/