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Road traffic statistics

37150

Details

AADF latest year 2024
Region South West
Local authority Wiltshire
Road name A420
Road type Major
Start junction road B4039
End junction road A350
Link length 2.00km (1.24 miles)
Easting & Northing 390000,174530
Latitude & longitude 51.46965,-2.14535

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 13,257 10,203 2,508 362 26 142 42
2023 Estimated using AADF from previous year on this link 13,094 10,082 2,464 362 27 143 42
2022 Estimated using AADF from previous year on this link 12,822 9,838 2,416 371 28 154 43
2021 Manual count 11,875 9,166 2,169 360 29 139 40
2020 Estimated using AADF from previous year on this link 10,332 8,176 1,694 360 93 69 33
2019 Estimated using AADF from previous year on this link 13,723 11,196 1,979 403 73 93 51
2018 Estimated using AADF from previous year on this link 13,696 11,171 1,986 400 60 87 52
2017 Manual count 13,656 11,225 1,896 391 61 89 55
2016 Estimated using AADF from previous year on this link 13,822 10,828 2,335 414 24 151 94
2015 Estimated using AADF from previous year on this link 13,501 10,696 2,163 398 24 151 95
2014 Estimated using AADF from previous year on this link 13,481 10,824 2,020 387 25 158 93
2013 Manual count 13,177 10,674 1,880 380 31 153 91
2012 Estimated using AADF from previous year on this link 13,194 10,758 1,747 452 31 152 87
2011 Estimated using AADF from previous year on this link 13,420 11,068 1,665 435 33 164 88
2010 Estimated using AADF from previous year on this link 13,256 11,034 1,573 414 38 151 84
2009 Manual count 13,448 11,248 1,528 419 38 171 82
2008 Estimated using AADF from previous year on this link 11,573 8,986 1,641 659 8 199 88
2007 Estimated using AADF from previous year on this link 11,929 9,331 1,641 678 8 199 80
2006 Estimated using AADF from previous year on this link 11,950 9,580 1,489 608 8 200 73
2005 Estimated using AADF from previous year on this link 11,650 9,319 1,419 596 9 237 79
2004 Manual count 11,624 9,328 1,352 609 8 257 78
2003 Estimated using AADF from previous year on this link 10,912 8,666 1,450 512 41 179 105
2002 Estimated using AADF from previous year on this link 10,636 8,588 1,287 514 50 146 101
2001 Estimated using AADF from previous year on this link 10,415 8,486 1,193 493 47 148 95
2000 Estimated using AADF from previous year on this link 10,335 8,460 1,154 491 53 133 97

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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 37150 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 37150 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. 120

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