Skip to main content
Road traffic statistics

37720

Details

AADF latest year 2024
Region South East
Local authority Buckinghamshire
Road name A4020
Road type Major
Start junction road M40
End junction road LA Boundary
Link length 1.30km (0.81 miles)
Easting & Northing 504860,185000
Latitude & longitude 51.55415,-0.48891

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 Automatic counter 17,968 14,309 2,889 489 79 147 134
2023 Automatic counter 17,927 14,276 2,874 497 78 145 135
2022 Automatic counter 18,442 14,663 2,957 529 79 153 140
2021 Automatic counter 16,680 13,286 2,639 494 88 136 126
2020 Automatic counter 15,258 12,113 2,432 463 108 129 123
2019 Automatic counter 19,482 15,853 2,740 523 95 173 193
2018 Automatic counter 19,685 15,952 2,817 533 88 188 195
2017 Automatic counter 19,858 16,155 2,769 529 78 191 215
2016 Manual count 22,228 18,216 2,951 593 91 212 256
2015 Estimated using AADF from previous year on this link 22,871 17,831 3,715 738 94 284 304
2014 Estimated using AADF from previous year on this link 21,928 17,309 3,342 693 95 275 309
2013 Estimated using AADF from previous year on this link 21,280 16,919 3,113 706 118 267 275
2012 Estimated using AADF from previous year on this link 21,261 17,124 2,932 686 120 253 266
2011 Manual count 21,270 17,248 2,816 684 128 260 262
2010 Manual count 20,221 16,589 2,668 536 129 205 223
2009 Manual count 21,354 17,823 2,527 568 55 173 263
2008 Manual count 21,629 17,860 2,695 626 87 202 246
2007 Estimated using AADF from previous year on this link 24,215 19,849 3,003 891 131 213 259
2006 Estimated using AADF from previous year on this link 24,062 19,988 2,711 877 129 211 275
2005 Estimated using AADF from previous year on this link 23,584 19,654 2,587 862 135 196 285
2004 Manual count 23,633 19,793 2,473 866 129 204 297
2003 Estimated using AADF from previous year on this link 22,752 18,892 2,693 730 45 259 178
2002 Estimated using AADF from previous year on this link 22,030 18,485 2,433 693 54 239 180
2001 Manual count 21,453 17,964 2,414 667 51 234 174
2000 Estimated using AADF from previous year on this link 23,541 19,011 3,020 893 55 325 292

Download data

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 37720 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 37720 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. 49
Raw counts Vehicle counts recorded at this count point. 168

To apply more filters to downloads, or retrieve data split into pages you can use our API.