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Road traffic statistics

28440

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 21
Link length 1.00km (0.62 miles)
Easting & Northing 512500,203110
Latitude & longitude 51.71545,-0.37294

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 146,626 98,746 29,689 17,571 0 342 279
2023 Manual count 144,170 94,496 27,280 21,632 0 306 457
2022 Manual count 144,170 94,656 28,646 20,165 0 475 228
2021 Manual count 125,164 75,960 28,330 20,465 0 253 156
2020 Estimated using AADF from previous year on this link 108,582 68,882 20,070 19,095 0 286 249
2019 Manual count 152,662 106,619 24,182 20,883 0 515 463
2018 Manual count 147,333 102,093 24,274 20,110 0 503 352
2017 Manual count 143,363 100,572 22,407 19,597 0 511 275
2016 Estimated using AADF from previous year on this link 153,156 106,676 24,320 21,574 0 377 210
2015 Manual count 150,388 105,812 22,901 21,089 0 372 214
2014 Estimated using AADF from previous year on this link 95,122 71,169 14,361 9,226 0 173 194
2013 Manual count 93,422 70,822 13,119 9,129 0 162 191
2012 Manual count 78,404 60,109 10,548 7,342 0 231 173
2011 Manual count 104,618 73,121 16,336 14,687 0 298 176
2010 Manual count 64,948 47,909 10,151 6,446 0 265 177
2009 Manual count 100,592 71,301 14,337 14,558 0 255 141
2008 Estimated using AADF from previous year on this link 95,006 66,494 14,480 13,341 0 327 364
2007 Manual count 94,901 67,030 13,533 13,696 0 339 303
2006 Estimated using AADF from previous year on this link 99,681 70,882 13,062 15,177 0 412 148
2005 Estimated using AADF from previous year on this link 98,703 70,669 12,163 15,362 0 354 155
2004 Estimated using AADF from previous year on this link 98,583 71,528 10,957 15,600 0 358 140
2003 Manual count 98,332 72,032 10,617 15,022 0 406 255
2002 Estimated using AADF from previous year on this link 102,429 74,208 12,175 14,954 0 448 644
2001 Manual count 100,805 73,111 11,639 15,046 0 395 614
2000 Estimated using AADF from previous year on this link 99,693 71,308 11,739 15,811 0 569 266

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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 28440 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 28440 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. 384

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