Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 5 replies
  • Subscribers 17 subscribers
  • Views 541 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

LED road studs linked to traffic lights to guide drivers at complex junction

Lisa Miles
Intelligent 'cat's eyes' to mark the lanes? Genuis idea!

May have helped that road user in the right hand lane on the roundabout junction last week to understand that they should have gone around and come back around the roundabout instead of turning left, across the front of three lanes of traffic... >:(
  • 0
    Know that junction well Lisa Miles‍ - complete nightmare!
  • 0
    Similar principles have been used for airfield lighting


    Even concrete barriers won't stop the determined bad driver. I have seen a car in a reserved/barriered right-turn lane, provided with gantry signals and green right-turn arrow, turn left across three lanes of red-light restrained traffic.



  • Former Community Member
    0 Former Community Member
    Looks interesting ..... like James said, it won't stop the bad driver but should make things better for the rest of us, especially in poor driving conditions.


    Kind of reminded me of some cats eyes on a stretch of the A12. They have a flicker effect from the cars headlights. You could see them very well even when it was foggy or when the road was like a mirror due to surface water. Never seen this type anywhere else, which is a shame as they are very good.


    Regards,


    Jon
  • 0
    I have noticed flicker on the LED cats eyes installed on a stretch of the A21.  I assume they are flickering at a high rate to save the rechargeable batteries.  The flicker is only noticeable in my peripheral vision at the point where I am passing them.
  • 0
    There was a 100 metre run of LED centre line studs that appeared nearby (no road works that I noticed) a few years ago. Then the strip got shorter and finally disappeared, perhaps they proved to be unreliable. I think they flickered in my peripheral vision. I certainly see that with the WAIT signs at pedestrian crossing when I turn my head while driving. It isn't the direction of seeing but the movement of the head. That suggests that it is the eye that is doing the strobing, (rather like the 'grill' in front of a PIR detector that makes a steady heat source appear to fluctuate as it moves). Compared to other light sources LEDs are very much 'point source', something that doesn't seem to have been considered with respect to 'human factors'. It is incredible to me that large light sources such as fluorescent tubes were considered to produce glare but intense LED sources "don't". [Drifting off-topic, need concrete barriers!]

Community Rules & Guidelines