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Road traffic statistics

26044

Details

AADF latest year 2024
Region South East
Local authority Buckinghamshire
Road name M40
Road type Major
Start junction road 4
End junction road 3
Link length 5.90km (3.67 miles)
Easting & Northing 488000,190927
Latitude & longitude 51.61031,-0.73054

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 Manual count 100,340 76,850 16,167 6,502 0 349 472
2023 Manual count 97,890 75,771 13,087 8,226 0 276 530
2022 Manual count 102,271 77,435 15,393 8,745 0 311 387
2021 Manual count 97,161 70,825 16,204 9,552 0 337 243
2020 Manual count 77,101 55,660 13,299 7,763 0 248 131
2019 Manual count 107,717 83,284 14,521 8,852 0 435 624
2018 Manual count 102,971 81,455 11,978 8,471 0 466 600
2017 Estimated using AADF from previous year on this link 114,582 89,140 16,587 7,821 0 479 555
2016 Manual count 113,127 89,236 15,298 7,508 0 517 568
2015 Estimated using AADF from previous year on this link 104,035 81,911 12,931 8,076 0 519 597
2014 Manual count 102,332 81,693 11,621 7,840 0 533 645
2013 Manual count 102,181 81,182 13,379 6,550 0 462 608
2012 Manual count 102,674 82,667 12,275 6,489 0 586 658
2011 Manual count 100,098 80,908 10,728 7,278 0 471 713
2010 Manual count 111,048 85,804 12,643 11,283 0 658 660
2009 Manual count 94,104 76,308 10,182 6,490 0 507 617
2008 Manual count 105,048 84,561 10,727 8,288 0 747 725
2007 Manual count 99,012 78,134 10,708 8,947 0 542 681
2006 Manual count 99,554 78,421 11,458 8,188 0 651 836
2005 Manual count 89,810 70,909 9,530 8,241 0 473 657
2004 Manual count 102,432 83,047 9,265 8,795 0 593 732
2003 Manual count 103,034 83,980 9,246 8,304 0 743 761
2002 Manual count 97,816 80,142 8,238 8,280 0 615 541
2001 Manual count 98,143 80,006 9,424 7,244 0 786 683
2000 Manual count 101,305 83,792 9,057 6,961 0 705 790

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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 26044 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 26044 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. 552

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