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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Mis-behaviour of speed limit recognition devices
On Tuesday, 2 April 2019 01:05:46 UTC+1, Rod Speed wrote:
"polygonum_on_google" wrote in message ... On Sunday, 31 March 2019 23:09:01 UTC+1, Rod Speed wrote: "polygonum_on_google" wrote in message ... Just got back from a little trip in the car. It has speed limit sign recognition built-in. Most of the time, it works pretty well. But today it was going crazy. Missing some signs. Telling me I am over-limit when I go from a 20 zone to a 30 zone and was doing under 20 €“ though it did €œsee€ the sign correctly! Not changing from indicating over-limit even when I dropped speed even further. (At no point was I actually over-limit - according to speedo and me!) A few miles down the road, back to working entirely properly. Now I could take all sorts of wild guesses as to the cause, and usually I would. The thing is, it misbehaved in exactly the same way, on the same bit of road, a week or two ago. Not just a straight road but a very windy route that varies from 60 through 30 and 20 several times, back up to 60, then 40 and finally 60 again. At no point in-between has it appeared to misbehave at all. On both occasions I had driver well over 20 miles before getting to this location €“ and about 20 miles after €“ and worked perfectly. While these devices are merely assistants to the driver, it is no big deal. If they start to actually control speed, this could be quite an issue. Any ideas what could be causing these issues? What model car ? Most likely its got a quite narrow view of the road so a windy road doesnt see all the signs. I bet some model cars handle that stretch of road fine. 1) The car sensors have a very good view of the road. You have no way of knowing what view the speed sign sensors have of the road. 2) I have already explained that at least most signs are being detcted properly. And that may be the signs the speed sign sensors dont have a good view of but you would have to give us a street view link of the ones it missed to be sure about that. 3) Even if it missed signs, that would not explain the behaviour I have described. Corse it would. The display showed 30-20-30-20-30 correctly through a significant part of the route. Changed displayed limit absolutely bang on the position of the sign. In the the 20 bit, it insisted I was over-limit even though I was definitely under-20. When the display went up to 30, it continued to say I was over-limit despite still being under-20. How could even missing a sign do that? How could missing EVERY sign make he display insist I was over-limit when driving at under-20. |
#2
Posted to uk.d-i-y
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Mis-behaviour of speed limit recognition devices
"polygonum_on_google" wrote in message ... On Tuesday, 2 April 2019 01:05:46 UTC+1, Rod Speed wrote: "polygonum_on_google" wrote in message ... On Sunday, 31 March 2019 23:09:01 UTC+1, Rod Speed wrote: "polygonum_on_google" wrote in message ... Just got back from a little trip in the car. It has speed limit sign recognition built-in. Most of the time, it works pretty well. But today it was going crazy. Missing some signs. Telling me I am over-limit when I go from a 20 zone to a 30 zone and was doing under 20 €“ though it did €œsee€ the sign correctly! Not changing from indicating over-limit even when I dropped speed even further. (At no point was I actually over-limit - according to speedo and me!) A few miles down the road, back to working entirely properly. Now I could take all sorts of wild guesses as to the cause, and usually I would. The thing is, it misbehaved in exactly the same way, on the same bit of road, a week or two ago. Not just a straight road but a very windy route that varies from 60 through 30 and 20 several times, back up to 60, then 40 and finally 60 again. At no point in-between has it appeared to misbehave at all. On both occasions I had driver well over 20 miles before getting to this location €“ and about 20 miles after €“ and worked perfectly. While these devices are merely assistants to the driver, it is no big deal. If they start to actually control speed, this could be quite an issue. Any ideas what could be causing these issues? What model car ? Most likely its got a quite narrow view of the road so a windy road doesnt see all the signs. I bet some model cars handle that stretch of road fine. 1) The car sensors have a very good view of the road. You have no way of knowing what view the speed sign sensors have of the road. 2) I have already explained that at least most signs are being detcted properly. And that may be the signs the speed sign sensors dont have a good view of but you would have to give us a street view link of the ones it missed to be sure about that. 3) Even if it missed signs, that would not explain the behaviour I have described. Corse it would. The display showed 30-20-30-20-30 correctly through a significant part of the route. Changed displayed limit absolutely bang on the position of the sign. In the the 20 bit, it insisted I was over-limit even though I was definitely under-20. When the display went up to 30, it continued to say I was over-limit despite still being under-20. How could even missing a sign do that? I was commenting on the missing some signs bit. How could missing EVERY sign make he display insist I was over-limit when driving at under-20. Sounds like it was having a massive brain fart. Less clear why it only does that more than once on that particular section of road. As someone else said, maybe its ****ed by design and some local source of RF is getting into the system there. |
#3
Posted to uk.d-i-y
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Lonely Psychopathic Senile Ozzie Troll Alert! LOL
On Wed, 3 Apr 2019 06:58:12 +1100, cantankerous trolling geezer Rot Speed,
the auto-contradicting senile sociopath, blabbered, again: Sounds like it was having a massive brain fart. Sounds like you are an ostentatious, pathological senile know-it-all, senile cretin! No wonder you got NOBODY in real life to talk to! -- Kerr-Mudd,John addressing senile Rot: "Auto-contradictor Rod is back! (in the KF)" MID: |
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