Skip to main content
Road traffic statistics

38021

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name M25
Road type Major
Start junction road 21A
End junction road 22
Link length 6.90km (4.29 miles)
Easting & Northing 516216,202781
Latitude & longitude 51.71174,-0.31929

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 136,660 83,730 33,550 19,039 0 172 169
2023 Estimated using AADF from previous year on this link 147,687 91,318 35,489 20,507 0 189 185
2022 Automatic counter 144,500 88,850 34,364 20,915 0 195 176
2021 Manual count 129,640 78,413 30,243 20,659 0 173 153
2020 Automatic counter 130,748 78,846 27,337 24,067 0 236 263
2019 Manual count 143,542 96,071 25,928 20,824 0 334 385
2018 Automatic counter 147,438 101,088 25,239 20,521 0 332 258
2017 Manual count 148,363 102,722 24,666 20,379 0 337 259
2016 Estimated using AADF from previous year on this link 148,214 103,679 23,303 20,499 0 386 346
2015 Manual count 145,559 102,840 21,943 20,042 0 381 354
2014 Manual count 136,255 97,408 20,416 17,814 0 314 303
2013 Manual count 131,804 97,316 17,613 16,369 0 292 215
2012 Manual count 124,551 92,337 15,943 15,629 0 424 217
2011 Manual count 120,357 86,896 16,291 16,605 0 260 305
2010 Manual count 114,646 79,127 17,689 17,063 0 478 289
2009 Manual count 100,802 71,375 13,811 14,871 0 416 329
2008 Manual count 115,510 82,994 16,026 15,733 0 514 243
2007 Manual count 115,226 84,666 15,211 14,614 0 498 237
2006 Manual count 113,763 84,490 14,320 13,816 0 669 468
2005 Manual count 115,712 83,315 13,566 17,952 0 513 366
2004 Manual count 120,469 86,115 14,416 19,137 0 348 453
2003 Manual count 120,145 88,751 12,578 18,122 0 334 360
2002 Manual count 121,049 89,304 13,218 17,954 0 260 313
2001 Manual count 123,971 90,892 15,220 17,002 0 381 476
2000 Manual count 109,401 78,567 12,140 17,725 0 354 615

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 38021 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 38021 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

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