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Road traffic statistics

26118

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A4
Road type Major
Start junction road A3044
End junction road A3044
Link length 1.20km (0.75 miles)
Easting & Northing 505000,177150
Latitude & longitude 51.48357,-0.48923

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 24,313 18,928 3,355 1,365 36 276 390
2023 Estimated using AADF from previous year on this link 24,407 19,039 3,336 1,382 32 264 386
2022 Manual count 24,409 19,079 3,278 1,409 32 260 383
2021 Estimated using AADF from previous year on this link 23,408 18,857 2,730 1,177 33 218 425
2020 Estimated using AADF from previous year on this link 21,759 17,479 2,561 1,106 37 191 422
2019 Estimated using AADF from previous year on this link 28,022 23,058 2,938 1,270 30 251 506
2018 Manual count 27,959 22,998 2,939 1,275 32 238 509
2017 Estimated using AADF from previous year on this link 23,756 18,731 2,691 1,193 50 493 648
2016 Estimated using AADF from previous year on this link 23,837 18,736 2,714 1,236 51 476 675
2015 Estimated using AADF from previous year on this link 23,357 18,507 2,513 1,177 52 475 684
2014 Estimated using AADF from previous year on this link 22,503 17,965 2,261 1,121 52 460 696
2013 Manual count 21,869 17,560 2,106 1,138 65 446 619
2012 Estimated using AADF from previous year on this link 16,113 11,389 1,936 1,904 60 439 444
2011 Manual count 16,066 11,472 1,859 1,846 64 452 437
2010 Manual count 25,174 19,788 2,326 1,837 37 327 896
2009 Manual count 30,915 26,041 2,955 915 36 448 556
2008 Estimated using AADF from previous year on this link 30,559 24,991 3,186 1,351 41 446 585
2007 Estimated using AADF from previous year on this link 30,754 25,167 3,180 1,373 41 458 576
2006 Estimated using AADF from previous year on this link 30,634 25,344 2,871 1,353 40 456 610
2005 Manual count 30,053 24,921 2,738 1,340 42 420 634
2004 Estimated using AADF from previous year on this link 36,098 29,532 4,150 1,448 24 496 472
2003 Estimated using AADF from previous year on this link 35,172 29,038 3,730 1,346 25 488 570
2002 Estimated using AADF from previous year on this link 34,089 28,413 3,369 1,281 30 450 576
2001 Estimated using AADF from previous year on this link 33,191 27,612 3,342 1,238 28 441 558
2000 Manual count 32,131 26,782 3,165 1,242 32 400 542

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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 26118 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 26118 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. 192

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