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Road traffic statistics

99859

Details

AADF latest year 2024
Region South West
Local authority Wiltshire
Road name A420
Road type Major
Start junction road A350
End junction road B4528 N
Link length 0.60km (0.37 miles)
Easting & Northing 390500,174240
Latitude & longitude 51.46705,-2.13815

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
2024 Estimated using AADF from previous year on this link 15,707 12,887 2,367 295 71 101 58
2023 Estimated using AADF from previous year on this link 15,470 12,694 2,325 295 70 98 58
2022 Estimated using AADF from previous year on this link 15,203 12,460 2,287 300 72 100 57
2021 Estimated using AADF from previous year on this link 14,209 11,666 2,109 289 80 91 53
2020 Estimated using AADF from previous year on this link 12,931 10,589 1,935 270 98 86 51
2019 Estimated using AADF from previous year on this link 16,637 13,940 2,192 307 86 116 82
2018 Estimated using AADF from previous year on this link 16,491 13,767 2,212 307 78 124 81
2017 Manual count 16,611 13,921 2,171 305 71 126 89
2016 Estimated using AADF from previous year on this link 15,906 12,495 2,795 405 43 114 97
2015 Estimated using AADF from previous year on this link 15,477 12,303 2,559 393 46 116 105
2014 Estimated using AADF from previous year on this link 15,142 12,064 2,440 409 50 132 97
2013 Estimated using AADF from previous year on this link 14,662 11,746 2,282 396 51 137 101
2012 Estimated using AADF from previous year on this link 14,650 11,850 2,196 384 52 123 97
2011 Estimated using AADF from previous year on this link 14,802 12,038 2,170 376 55 129 89
2010 Estimated using AADF from previous year on this link 14,628 12,075 1,945 361 50 153 94
2009 Estimated using AADF from previous year on this link 14,566 12,148 1,821 353 50 161 83
2008 Manual count 14,288 11,886 1,794 380 50 144 84
2007 Estimated using AADF from previous year on this link 12,018 9,595 1,745 500 28 105 73
2006 Estimated using AADF from previous year on this link 12,133 9,751 1,658 533 45 110 81
2005 Estimated using AADF from previous year on this link 12,345 9,941 1,633 558 29 126 87
2004 Estimated using AADF from previous year on this link 12,726 10,419 1,532 530 34 153 92
2003 Estimated using AADF from previous year on this link 12,461 10,286 1,391 439 42 233 112
2002 Estimated using AADF from previous year on this link 12,689 10,681 1,281 447 47 164 116
2001 Estimated using AADF from previous year on this link 12,448 10,513 1,195 466 45 158 116
2000 Manual count 12,792 10,850 1,187 494 47 151 110

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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 99859 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 99859 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. 25
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. 50
Raw counts Vehicle counts recorded at this count point. 72

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