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Road traffic statistics

38020

Details

AADF latest year 2024
Region South East
Local authority Buckinghamshire
Road name M25
Road type Major
Start junction road 16
End junction road LA Boundary
Link length 6.20km (3.85 miles)
Easting & Northing 501559,187449
Latitude & longitude 51.57677,-0.5358

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 170,196 115,865 35,622 18,166 0 351 193
2023 Automatic counter 169,172 116,063 34,591 17,971 0 354 193
2022 Automatic counter 167,409 114,462 33,928 18,462 0 370 187
2021 Manual count 144,338 97,488 28,814 17,562 0 317 157
2020 Automatic counter 143,194 98,244 25,267 18,898 0 428 357
2019 Manual count 150,227 111,381 22,436 15,364 0 564 483
2018 Automatic counter 162,742 121,825 23,763 16,294 0 580 279
2017 Manual count 162,377 122,531 22,971 16,015 0 582 278
2016 Estimated using AADF from previous year on this link 150,542 110,758 21,866 17,082 0 614 223
2015 Manual count 147,811 109,861 20,590 16,527 0 606 228
2014 Manual count 147,650 113,198 18,292 15,125 0 633 403
2013 Manual count 135,976 105,567 17,255 12,081 0 681 393
2012 Manual count 131,529 102,081 17,086 11,390 0 589 384
2011 Manual count 118,703 90,817 16,072 10,986 0 526 302
2010 Manual count 123,593 93,683 16,773 12,357 0 467 313
2009 Manual count 127,382 98,708 15,169 12,602 0 590 313
2008 Manual count 127,908 107,994 8,154 11,171 0 305 284
2007 Manual count 119,205 90,036 14,426 13,534 0 710 499
2006 Manual count 125,861 96,330 15,153 13,214 0 742 422
2005 Manual count 119,343 91,281 13,733 13,283 0 563 483
2004 Manual count 116,485 91,246 11,824 12,488 0 506 421
2003 Manual count 128,576 100,298 13,051 14,137 0 557 533
2002 Manual count 135,569 106,685 13,812 13,913 0 644 515
2001 Manual count 135,637 106,071 15,254 13,116 0 705 491
2000 Manual count 122,767 94,559 11,833 15,165 0 619 591

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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 38020 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 38020 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. 456

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