Post by Administrator on Feb 29, 2016 17:13:40 GMT
I have decided to start a new thread on this, just so its easier to find..
There seems to be a few variations of the sign around. And i am going to find out if they are all authorized for use.
Different design of signs.. one has white circles around the colours
This example does not have the black border around the traffic lights! and looks significantly different to the others... in fact it is a bit like a traffic light not being fitted with the filters it should have on.. a picture of filterless traffic lights!?
here is a photo of the filters... the side filters. you can get the front filters (like a window blind) but those ones are a legal requirement.
this sign is directly across from the sign with the filter symbol missing! and it has it.. but there is also a sign nearby saying "new road layout ahead" which implies new signs & checks as well.
the new road layout sign has been turned around!?
The stop sign tells you where to stop. this would eliminate any confusion with cycle areas at traffic lights.
At the end of the M606 motorway.. again we have the FADED red triangle.. and i suspect there is a design/made error with the pigment used because the black doesnt fade, and the colours of the lights havent faded.
I actually believe these signs are intended to fade. and the matter requires professional investigation. Or even secret independent investigation.
Lindal-in-furness Traffic light warning sign.. yet clear sight of the traffic lights. and why 250yds? An example that they could have put the same at Macclesfield traffic lights 250yds before the fixed camera? Are these triangles even the same sizes?
Another look into the placement of the traffic light warning sign
I used this example as an evaluation sign... where it seems to question the need for a sign at all.
With my (really slow) look at the manual.. next to the house (by co-incidence) has a "beware rotveiller dog" sign outside and by co-incidence the people had just got back in while i was parked there filming the sign! also a guy walking down the road, with a red top on and strangely one shoulder was larger than the other one!? as if he had something under his shirt, or else a bigger shoulder blade?! lol. anyway..
So, Really this sign is in place because of the parked cars. But doesnt that mean that there should be a traffic light warning sign on every single road before traffic lights that doesnt have double yellow lines or no-stopping?!
BUT, if you notice, they have put ANOTHER set of HIGHER HEIGHT lights up. So why require the sign?! Also.. i dont even know when these lights were placed, because I Think they are quite new!?
The fact that they use YARDS and can place the sign anywhere they want does not add clarity to the placement guides and helping to judge distance. Also you have the curve of the road to consider as well.
With these points in mind, we can go back to the Macclesfield instance... And that Traffic light warning sign of 150yds placed with the POLICE ENFORCEMENT SIGN..
Now.... the Traffic light sign placement guidelines in the manual have different figures for SPEED LIMIT. but the 85 meters distance is clearly in the LOWER catergory. YET, in this instance at Macclesfield the sign is located BEFORE A CHANGE IN SPEED LIMIT!
IT CHANGES PERCENTILE of speed AFTER THE SIGN! And the signs should have been set to the specifications (in my opinion) to be placed AFTER the change in speed limit, NOT BEFORE, because it is a DIFFERENT PERCENTILE of road section!
ALSO the road bends on APEX (as someone has put a mountain sign on the mill wall to point out themselves) and the visibility of (both) left & right traffic light signal is for further back on that percentile.
ALSO if you look from ABOVE you will see that on google maps the road is curved, and this is in fact in a way, a homage to the curve of the mill lane traffic light bent road itself. To measure the distances you need to measure a curved line.
150 yds is 137 meters
This is 85 meters, but doesnt look very far at all... the visibility distance is for the next percentile up, though (refer back to manual)
85 meters is 93 yds
Draw curved measurements not straight1 but this is the approximate true visibility distance of the the first traffic lights, depending on exactly where on the "CURVE" you deem either ONE or BOTH signals completely visible from.
AND according to google maps measurements.. that 150yds traffic light warning sign is in fact placed
202yds!! ? from the lights, not 150yds?! so that is another error, besides the fact the sign is placed outside of the 30mph limit percentile area, which ends exactly as you have passed through the Mill lane set of traffic lights further on!
And if you think that was a crap measurement effort for my first attempt in drawing that line to work out the traffic light warning sign visibility distance evaluations then what about THIS slightly curved road, with a straight line through it for RadAr measurements! nowhere near as BENT as Macclesfield traffic lights road, but STILL NOT STRAIGHT!