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Speed Indicator Device (SID)

Monthly Data

The speed Indicator Device (SID) was placed on Martock Road at the entrance to the village (when coming from Langport Road towards the village) within the 20mph zone in November 2023.

Read the report summary here.

In the SID results below:

  • "Langport" reports cover traffic coming into Long Sutton from the Langport (West) direction on the A372

  • "Martock" reports cover traffic coming into Long Sutton from the Martock (South) direction on the B3165

  • "School" covers traffic coming in past the school 20mph zone

  • The 'Text' reports are a written list of 

       data for each month​

  • The other three buttons are graphs

Each text analysis report shows:

  • The 85th percentile speed - ie the speed of 85% of all vehicles that pass.  Ditto for 50th percentile.

  • The 85th percentile volume - ie the number of vehicles within that 85th percentile

  • The maximum speed recorded during the month

  • The total vehicles recorded during the month

  • Similar speed and volume details on a weekly basis

The charts are self-explanatory.  

Click on an arrow to see the data:

November 2022 (Langport + School)





SID glitch - dates are really Nov 2022. 01 - 14 Nov, SID was on second Langport road site. 15 - 30 Nov, SID was opposite school

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