Data collection in Tooting Commons LTN

Traffic counting strips look like this but the two black rubber tubes are usually much closer together:

Depending on the model used, traffic counting strips can measure the volume of vehicles on the road, the classification of the vehicle (car, truck, moped, etc), the gap between each vehicle, and the speed and direction the vehicle is travelling.

The council recently laid traffic counting strips in the following roads to collect data before the LTN was put in:

  • Elmbourne Road
  • Louisville Road
  • Drakefield Road
  • Streathbourne Road
  • Huron Road
  • Manville Road
  • Bushnell Road
  • Bedford Hill
  • Garrads Road
  • Elmfield Road
  • Carminia Rd
  • Dr Johnson Avenue
  • Ritherdon Road

The council will be laying traffic counting strips in the same places two more times each, to collect data with the LTN in place. It will then be possible to see the “before” and “after” position, and measure the overall effect of the LTN.

We have asked the council to publish the data it collects so anyone who is curious can view it, and they have agreed to this.

1 thought on “Data collection in Tooting Commons LTN

  1. Matt Morris

    So how do you propose to distinguish between the effect of the Tooting Commons LTN and the effect of the TfL/CS7 A24 changes, given that you have chosen to put the former in simultaneously with TfL’s installation of the latter?

    (This is a rhetorical question: presumably you will not be able to distinguish the effects of two such changes taking place at the same time)

    And if you can’t distinguish the effects of the two, how are you going to figure out if the Tooting Commons LTN is causing undesirable side effects?


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