I understand you have requested a copy of the data following a speed survey carried out on
The survey data is interrogated by a specialist computer programme and provides detailed information. Some parts of the information are restricted and used for operational policing purposes but other information is routinely provided. Results show:
- some 16854 vehicles were monitored between 26.04.07 and 02.05.07
- an average speed of 32 mph
- an 85th percentile speed of 38 mph. The 85th percentile speed is a road engineering measurement used by the Department for Transport and shows the speed at which 85% of vehicles travel at or below.
- there are some peaks in speeding at approximately 0700 hrs and 2230 hrs
- a higher volume of traffic at about 0830 hrs and 1730 hrs.
Operational information includes the maximum speed and individual speeds of vehicles/time etc. When assessing release of this information potential harm was identified, please see attached Harm and Public Interest Test. This therefore represents a refusal to provide this additional information under S31 Law Enforcement and S38 Health and Safety of the FOIA.
It is planned to carry out another speed survey at the same site later in the year to show speed before and after enforcement and educational efforts.
I trust this information is helpful, however, in the event that you are not satisfied I have enclosed details of the FOI complaints procedures.
Yours sincerely,
Essi Ahari (Insp.)
Manager, Arrive Alive
PIT test
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