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Road traffic statistics

37106

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A404
Road type Major
Start junction road LA Boundary
End junction road A4180
Link length 0.70km (0.43 miles)
Easting & Northing 508000,191930
Latitude & longitude 51.61585,-0.44151

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 16,470 13,829 1,712 311 86 163 455
2023 Estimated using AADF from previous year on this link 16,533 13,910 1,702 314 77 156 451
2022 Estimated using AADF from previous year on this link 16,531 13,939 1,672 318 75 154 447
2021 Manual count 15,988 13,571 1,540 301 73 133 442
2020 Estimated using AADF from previous year on this link 17,947 15,088 2,209 246 110 89 315
2019 Estimated using AADF from previous year on this link 23,216 19,904 2,534 284 89 116 377
2018 Estimated using AADF from previous year on this link 23,162 19,852 2,535 285 95 110 380
2017 Estimated using AADF from previous year on this link 23,151 19,869 2,485 293 96 110 395
2016 Manual count 23,198 19,875 2,506 300 98 106 411
2015 Estimated using AADF from previous year on this link 21,655 19,161 1,467 773 1 89 164
2014 Estimated using AADF from previous year on this link 21,665 19,226 1,410 764 1 94 171
2013 Estimated using AADF from previous year on this link 21,618 19,171 1,364 815 1 90 178
2012 Estimated using AADF from previous year on this link 21,406 19,005 1,331 784 1 92 193
2011 Manual count 21,748 19,375 1,363 729 1 85 196
2010 Estimated using AADF from previous year on this link 18,488 16,005 1,482 350 19 64 587
2009 Estimated using AADF from previous year on this link 18,920 16,449 1,499 351 19 68 553
2008 Estimated using AADF from previous year on this link 19,089 16,581 1,539 373 17 72 524
2007 Manual count 19,507 16,972 1,572 374 14 73 516
2006 Estimated using AADF from previous year on this link 24,248 20,821 2,380 369 33 79 599
2005 Estimated using AADF from previous year on this link 23,859 20,445 2,399 372 27 72 571
2004 Estimated using AADF from previous year on this link 24,026 20,673 2,350 389 26 79 535
2003 Estimated using AADF from previous year on this link 23,814 20,427 2,481 356 30 82 468
2002 Estimated using AADF from previous year on this link 23,967 20,844 2,254 383 21 80 406
2001 Estimated using AADF from previous year on this link 23,919 20,844 2,210 409 21 84 372
2000 Manual count 23,883 20,823 2,204 430 19 78 348

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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 37106 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 37106 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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