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Confusing sign on traffic head.

Reported via desktop in the General Fault category anonymously at 13:54, Tuesday 18 January 2022

Sent to TfL less than a minute later. TfL ref: FMS3249627.

I find the signal head in the centre of the A1, which I shall refer to as A, to be confusing. This signal head (A) is a secondary signal head to the two primary heads located before the junction at a stop line before a stud-marked pedestrian crossing. Signal head A is comprised of two sets, a left and a right. The right shows a green arrow ahead only with no right turn signed by a sign to digram 612. The left set shows a green arrow to the left only and a proceed left sign to diagram 606. Signal head A is located approximately 9m behind the far kerb of junction to which it applies and 7m behind a secondary signal head, which I shall refer to as B, located on the right hand pavement of Camden Road. Signal head B is essentially the same as the left hand set of signal head A and repeats the signal given by its primary on the left side of the left-most of the three lanes on the approach. Signal head A is located on the right hand side of the two of the three approach lanes that go ahead only, and is located 46m from the advanced stop line of the left-only lane, which is very near the 50m maximum for this as given in the TSM Ch6 3.1.6. The junction is marked with a yellow box, and 20m beyond the yellow box is the stop line for another pedestrian controlled crossing. This means that for 10m beyond the far edge of the yellow box there is an area of road where vehicles legitimately held stationary by the signal of a crossing can only see this confusing secondary signal A - vehicles in this area have already committed to going straight ahead, yet can see a sign which appears to indicate that they must proceed left. Further, vehicles will potentially be caught in the yellow-box area, and although they may not legitimately be stationary in that box, they may be moving very slowly for a significant period of time after having "finished" attending to the primary signal. There is nothing to distinguish this secondary signal A from a primary signal that pertains to the two lanes now left out of the three. I do not see that there is any call at all for the left hand set of lights on this signal head. The primary signals are separated left and right as appropriate to the lane arrangement, and there is a secondary signal for the left hand only lane. Further TSM Ch6 5.2 requires that signs to diagram 606 are located in specific positions on the signal head and does not require one if there is a filter arrow showing that movement. In the opposite direction, the situation is not repeated - the right turn only lane on the southbound does not have a secondary signal on the left hand pavement! Tollington Road at this junction is one way - no entry from the A1, therefore there is no symmetry in the signalling northbound and southbound on the A1. I have written to you several times about this junction. You have taken some steps to correct issues I have raised here, but not this one with the signal heads yet. If I might suggest, it could be clearer that the road goes from three lanes to two, with the left lane being left only. There is room beyond the pedestrian crossing on the junction approach, before the yellow box begins, to include a left only arrow and two ahead only arrows.

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Updates

  • Thank you for taking the time to report this to us. It is much appreciated. This has now been investigated and we can confirm that there is a non-urgent fault at these traffic lights. We have therefore referred it to our contractors, and you should see an improvement within 28 days. If you need anything else, or have any questions, please contact our customer services team on 0343 222 1234

    Please also be aware that, all Action Scheduled reports are automatically closed after 28 days. However, the fault will be fixed within this timescale, which may be sooner, or in a few cases take a little longer.

    State changed to: Action scheduled

    Posted by TfL at 11:31, Thursday 20 January 2022

  • The action scheduled for your report should now have been completed as detailed in your previous response. On some occasions it does take a little longer than scheduled. If you have any further queries on this, please either create a new report or contact our Customer Contact Centre on 0343 222 1234

    State changed to: Fixed

    Posted by TfL at 05:32, Friday 18 February 2022

This report is now closed to updates. You can make a new report in the same location.