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Road traffic statistics

37118

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A408
Road type Major
Start junction road A3044
End junction road M4
Link length 0.60km (0.37 miles)
Easting & Northing 507400,178740
Latitude & longitude 51.49741,-0.4542

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 13,808 10,781 1,810 668 37 217 332
2023 Estimated using AADF from previous year on this link 13,857 10,845 1,800 676 33 208 329
2022 Manual count 13,855 10,868 1,768 688 32 205 327
2021 Estimated using AADF from previous year on this link 13,278 10,280 1,847 510 70 99 542
2020 Estimated using AADF from previous year on this link 12,363 9,528 1,733 477 78 87 538
2019 Estimated using AADF from previous year on this link 15,869 12,570 1,988 552 63 114 645
2018 Estimated using AADF from previous year on this link 15,834 12,537 1,989 551 68 108 649
2017 Estimated using AADF from previous year on this link 15,858 12,548 1,949 580 68 107 675
2016 Estimated using AADF from previous year on this link 15,929 12,552 1,965 606 70 104 703
2015 Estimated using AADF from previous year on this link 16,048 12,816 1,905 565 68 97 665
2014 Manual count 16,050 12,860 1,831 564 59 102 693
2013 Estimated using AADF from previous year on this link 16,424 12,482 2,117 1,001 79 157 666
2012 Estimated using AADF from previous year on this link 16,278 12,374 2,065 955 97 161 722
2011 Estimated using AADF from previous year on this link 16,491 12,615 2,115 880 112 148 733
2010 Estimated using AADF from previous year on this link 16,495 12,653 2,126 858 112 148 710
2009 Estimated using AADF from previous year on this link 16,844 13,004 2,150 865 115 157 668
2008 Estimated using AADF from previous year on this link 17,036 13,109 2,207 921 106 166 633
2007 Estimated using AADF from previous year on this link 17,402 13,417 2,255 938 91 170 622
2006 Manual count 17,452 13,622 2,207 830 70 173 620
2005 Estimated using AADF from previous year on this link 20,287 16,479 1,980 846 67 214 768
2004 Estimated using AADF from previous year on this link 20,423 16,663 1,940 868 65 233 719
2003 Estimated using AADF from previous year on this link 20,154 16,465 2,047 769 76 244 629
2002 Estimated using AADF from previous year on this link 20,251 16,801 1,860 808 52 236 546
2001 Manual count 20,217 16,801 1,824 845 50 246 501
2000 Estimated using AADF from previous year on this link 18,859 15,791 1,906 555 73 171 436

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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 37118 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 37118 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. 96

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