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Road traffic statistics

18441

Details

AADF latest year 2018
Region South West
Local authority Wiltshire
Road name A4
Road type Major
Start junction road A420 roundabout
End junction road Pewsham Way
Link length 2.90km (1.80 miles)
Easting & Northing 391860,173000
Latitude & longitude 51.45592,-2.11854

Location

Contents

Average Annual Daily Flow

Average annual daily flow
Year Count method All motor vehicles Cars & taxis LGVs HGVs Pedal cycles Motorcycles Buses & coaches
2018 Manual count 25,796 22,019 2,923 621 11 198 34
2017 Estimated using AADF from previous year on this link 23,118 18,683 3,578 647 10 160 49
2016 Estimated using AADF from previous year on this link 22,931 18,706 3,381 629 10 164 51
2015 Estimated using AADF from previous year on this link 22,356 18,418 3,096 620 10 168 55
2014 Estimated using AADF from previous year on this link 22,551 18,763 2,943 625 11 165 55
2013 Estimated using AADF from previous year on this link 22,326 18,959 2,585 576 12 155 52
2012 Manual count 22,404 19,067 2,555 571 12 155 55
2011 Estimated using AADF from previous year on this link 23,503 19,890 2,861 510 12 163 79
2010 Estimated using AADF from previous year on this link 23,497 19,990 2,775 499 11 154 79
2009 Estimated using AADF from previous year on this link 23,950 20,418 2,761 529 11 167 75
2008 Manual count 24,093 20,750 2,549 540 11 177 77
2007 Estimated using AADF from previous year on this link 23,722 19,996 2,648 697 8 307 74
2006 Manual count 24,492 20,982 2,427 702 13 303 78
2005 Manual count 23,295 20,004 2,313 699 16 226 53
2004 Manual count 22,477 19,092 2,324 734 19 267 60
2003 Manual count 23,908 20,531 2,278 760 32 246 93
2002 Estimated using AADF from previous year on this link 20,855 17,730 2,037 709 11 212 167
2001 Manual count 20,899 17,765 2,033 728 11 210 163
2000 Manual count 21,908 19,011 1,991 691 4 132 83

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Data disclaimer

Traffic figures at the regional and national level are robust, and are reported as accredited official statistics. However, DfT’s traffic estimates for individual road links and small areas are less robust, as they are not always based on up-to-date counts made at these locations. Where other more up-to-date sources of traffic data are available (e.g. from local highways authorities), this may provide a more accurate estimate of traffic at these locations.

It is the responsibility of the user to decide which data are most appropriate for their purpose, and if DfT road link level traffic estimates are used, to make a note of the limitations in any published material.

Quality flags in data downloads

DfT’s road link level traffic estimates are calculated using a variety of methods, with some methods likely to produce more accurate estimates than others.

The data tables available to download here contain a column - estimation_method – showing the method used to estimate traffic for each location and year. Figures having an estimation method of “Counted” are likely to be more accurate than those marked as “Estimated”, and the latter should be used with caution.

Site details
Manual count point site 18441 details
Average annual daily flow
Number of vehicles that travel past the count point (in both directions) on an average day of the year.
Average annual daily flow by direction
Number of vehicles that travel past the count point on an average day of the year, by direction of travel.
Raw counts
Vehicle counts recorded at this count point.
Data Description Records Download
Site details Manual count point site 18441 details 1
Average annual daily flow Number of vehicles that travel past the count point (in both directions) on an average day of the year. 19
Average annual daily flow by direction Number of vehicles that travel past the count point on an average day of the year, by direction of travel. 38
Raw counts Vehicle counts recorded at this count point. 216

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