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Road traffic statistics

8238

Details

AADF latest year 2024
Region South West
Local authority Wiltshire
Road name A420
Road type Major
Start junction road A4
End junction road A420 Split
Link length 0.30km (0.19 miles)
Easting & Northing 391756,173442
Latitude & longitude 51.45989,-2.12005

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 16,991 14,065 2,351 464 45 79 32
2023 Estimated using AADF from previous year on this link 16,739 13,855 2,310 466 45 76 32
2022 Estimated using AADF from previous year on this link 16,453 13,600 2,271 473 45 77 31
2021 Estimated using AADF from previous year on this link 15,384 12,733 2,095 457 51 71 29
2020 Estimated using AADF from previous year on this link 13,999 11,557 1,922 425 62 67 28
2019 Estimated using AADF from previous year on this link 18,012 15,215 2,178 484 54 90 45
2018 Estimated using AADF from previous year on this link 17,847 15,027 2,197 483 49 96 44
2017 Manual count 17,976 15,194 2,156 479 45 98 49
2016 Estimated using AADF from previous year on this link 19,371 16,546 2,252 409 34 82 82
2015 Estimated using AADF from previous year on this link 18,930 16,291 2,061 405 36 84 89
2014 Estimated using AADF from previous year on this link 18,534 15,975 1,966 415 39 95 82
2013 Estimated using AADF from previous year on this link 17,982 15,553 1,838 405 40 100 86
2012 Manual count 18,027 15,692 1,769 395 41 89 82
2011 Estimated using AADF from previous year on this link 17,992 14,890 2,488 455 63 79 80
2010 Estimated using AADF from previous year on this link 17,780 14,934 2,229 438 57 94 85
2009 Estimated using AADF from previous year on this link 17,711 15,024 2,087 426 57 99 75
2008 Estimated using AADF from previous year on this link 17,378 14,701 2,056 457 57 89 75
2007 Estimated using AADF from previous year on this link 17,674 15,031 2,014 451 50 92 86
2006 Estimated using AADF from previous year on this link 17,865 15,276 1,912 485 81 97 95
2005 Estimated using AADF from previous year on this link 18,182 15,571 1,884 514 51 111 102
2004 Manual count 18,828 16,323 1,767 495 60 134 109
2003 Estimated using AADF from previous year on this link 17,887 15,238 1,773 463 50 247 166
2002 Estimated using AADF from previous year on this link 18,270 15,823 1,633 470 56 174 170
2001 Estimated using AADF from previous year on this link 17,925 15,574 1,524 491 54 168 168
2000 Estimated using AADF from previous year on this link 18,420 16,073 1,513 514 56 160 160

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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 8238 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 8238 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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