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Road traffic statistics

37107

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A404
Road type Major
Start junction road A4125
End junction road LA Boundary
Link length 1.30km (0.81 miles)
Easting & Northing 510004,190613
Latitude & longitude 51.60362,-0.41299

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 23,008 19,515 2,584 406 239 177 326
2023 Estimated using AADF from previous year on this link 23,101 19,630 2,569 409 214 170 323
2022 Estimated using AADF from previous year on this link 23,097 19,671 2,524 413 209 167 321
2021 Manual count 22,328 19,151 2,325 390 204 145 317
2020 Estimated using AADF from previous year on this link 22,798 19,765 2,424 194 130 85 330
2019 Estimated using AADF from previous year on this link 29,587 26,074 2,780 225 105 112 396
2018 Estimated using AADF from previous year on this link 29,517 26,006 2,781 225 112 106 399
2017 Manual count 29,506 26,029 2,726 231 113 106 414
2016 Estimated using AADF from previous year on this link 27,330 24,167 2,214 440 59 113 395
2015 Estimated using AADF from previous year on this link 27,720 24,677 2,146 418 57 106 374
2014 Estimated using AADF from previous year on this link 27,735 24,760 2,063 411 50 111 390
2013 Estimated using AADF from previous year on this link 27,631 24,689 1,996 433 44 108 407
2012 Manual count 27,391 24,476 1,947 417 54 110 441
2011 Estimated using AADF from previous year on this link 26,816 22,143 3,417 638 258 161 457
2010 Estimated using AADF from previous year on this link 26,880 22,209 3,434 633 260 161 443
2009 Estimated using AADF from previous year on this link 27,503 22,825 3,472 618 269 172 416
2008 Estimated using AADF from previous year on this link 27,807 23,009 3,564 658 248 182 394
2007 Estimated using AADF from previous year on this link 28,440 23,551 3,641 673 211 188 387
2006 Manual count 28,647 23,909 3,562 600 164 191 385
2005 Estimated using AADF from previous year on this link 26,846 23,001 2,532 563 100 149 601
2004 Estimated using AADF from previous year on this link 27,053 23,257 2,479 592 98 163 562
2003 Estimated using AADF from previous year on this link 26,798 22,981 2,618 535 113 171 493
2002 Manual count 27,003 23,450 2,378 583 78 165 427
2001 Estimated using AADF from previous year on this link 27,924 25,065 2,288 245 112 222 104
2000 Estimated using AADF from previous year on this link 27,874 25,040 2,282 249 102 206 97

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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 37107 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 37107 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. 120

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