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Road traffic statistics

56114

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A4
Road type Major
Start junction road A3044
End junction road M4 spur road
Link length 1.90km (1.18 miles)
Easting & Northing 506000,176960
Latitude & longitude 51.48167,-0.47489

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 17,240 13,559 1,907 774 101 226 774
2023 Estimated using AADF from previous year on this link 17,299 13,639 1,896 781 90 216 766
2022 Manual count 17,299 13,668 1,863 795 88 213 760
2021 Estimated using AADF from previous year on this link 18,791 14,856 2,066 763 78 212 894
2020 Estimated using AADF from previous year on this link 17,495 13,770 1,938 715 87 186 886
2019 Estimated using AADF from previous year on this link 22,520 18,166 2,223 825 70 244 1,063
2018 Manual count 22,466 18,118 2,224 823 75 231 1,070
2017 Estimated using AADF from previous year on this link 20,496 17,119 1,600 663 64 138 977
2016 Estimated using AADF from previous year on this link 20,579 17,124 1,613 691 65 133 1,018
2015 Estimated using AADF from previous year on this link 20,781 17,485 1,564 645 63 124 963
2014 Estimated using AADF from previous year on this link 20,830 17,544 1,503 648 55 131 1,004
2013 Estimated using AADF from previous year on this link 20,808 17,494 1,454 687 49 126 1,047
2012 Manual count 20,680 17,343 1,418 654 60 129 1,135
2011 Estimated using AADF from previous year on this link 24,001 19,634 1,897 853 40 159 1,458
2010 Estimated using AADF from previous year on this link 23,990 19,693 1,906 819 40 159 1,413
2009 Estimated using AADF from previous year on this link 24,510 20,240 1,927 844 42 170 1,329
2008 Manual count 24,711 20,403 1,978 890 38 180 1,260
2007 Estimated using AADF from previous year on this link 25,931 22,091 1,956 834 78 183 867
2006 Estimated using AADF from previous year on this link 26,138 22,427 1,914 747 61 186 864
2005 Estimated using AADF from previous year on this link 25,718 22,023 1,930 770 48 171 824
2004 Manual count 25,905 22,268 1,890 789 48 186 772
2003 Estimated using AADF from previous year on this link 28,495 24,617 2,027 605 97 269 977
2002 Estimated using AADF from previous year on this link 28,713 25,120 1,841 645 67 260 847
2001 Manual count 28,669 25,120 1,805 695 65 272 777
2000 Estimated using AADF from previous year on this link 29,259 25,267 2,267 579 48 281 865

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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 56114 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 56114 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. 144

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