Site Locations of South Gloucestershire Council Traffic Speed Data and Explanatory Notes. RE: FIDP/010210- 17 Hosking

 Sites 003, 4215, 0030, 3504, 3512, 4752, 091, 092 were positioned originally to count the volume of passing traffic using inductive loops cut into the carriageway. Since their installation counter units have advanced technologically and are now also able to record vehicle speeds. The locations were not chosen as speed survey points and some are more useful than others in this respect.

 The sites at Rodford Way, Yate and Over Lane Almondsbury were commissioned by the Council to 3rd Party survey companies and the data files are presented in different formats. The Excel files have their own location maps contained within (as a hyperlink to Google Maps). These surveys used ATC tube wires stretched across the highway.

 Sites 2011001 and 2011002 are surveys undertaken on Bradley Stoke Way simultaneously. There is an approximate 1% variance in the number of recorded vehicles. These surveys used radar counters. This means that small vehicles are occasionally occluded by HGV’s or other large vehicles and do not get ‘seen’ by the radar. This margin of error is a recognised factor and a +/- of 3% should be considered. Occlusion of the radar signal by larger vehicles only affects the number of vehicles that are counted it does not affect speed readings.

 The maps below give the site numbers at each location and corresponds to the Excel filename for the associated speed data.

 The software that analyses the data records Mean Speeds and 85th Percentile Speeds. The speeds are put into 5mph incremental ‘bins’. The software does not explicitly define the ‘level of compliance’. The 3rd party surveys may display this.

 The Council data (those files titled ‘Speed7day-Summary….’ Show the results as a 7 day summary. The data from all the days of the survey are averaged to give a Mon-Sun ‘typical week’.

A432 Badminton Rd n/o Cuckoo Lane, Downend Site no 4753

Cotswold Road w/o Hounds Road eastbound only, Chippping Sodbury. Site 20140677

A432 Cotswold Road w/o Hounds Rd, Chipping Sodbury, westbound only – Site 20070017

A432 Badminton Road w/o Church Lane - Old Sodbury. Site 20130080

A38 Gloucester Road n/o M5 J16, Almondsbury. Site 0030

A38 Gloucester Road northbound s/o M5 J16 – Sites 91 and 92 (north and southbound)

A38 sw/o Forty Acre Lane, Alveston. Site 20150123

Bradley Stoke Way between Savages Wood Road and Webbs Wood Road. Sites 20110001 and 20110002

Bristol Road/ Yate Road between the Iron Acton Bypass and Iron Acton

Park Lane n/o Sunnyside, Frampton Cotterell. Site 20160053

Westerleigh Road s/o Nibley Lane, Yate. Site 3504

Westerleigh Road e/o jnctn Shire Way, Yate. Site 3512