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Road traffic statistics

26012

Details

AADF latest year 2024
Region London
Local authority Hounslow
Road name M4
Road type Major
Start junction road 3
End junction road 2
Link length 8.40km (5.22 miles)
Easting & Northing 514700,178640
Latitude & longitude 51.49508,-0.34911

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 96,962 78,856 13,057 3,619 0 782 648
2023 Automatic counter 96,676 78,991 12,679 3,567 0 790 649
2022 Manual count 92,306 75,335 12,053 3,511 0 799 608
2021 Automatic counter 71,926 55,698 11,958 3,686 0 526 57
2020 Manual count 65,441 50,725 10,694 3,422 0 539 60
2019 Automatic counter 113,302 91,642 15,561 4,187 0 1,071 840
2018 Automatic counter 102,095 82,327 14,223 3,784 0 1,006 755
2017 Automatic counter 103,826 84,275 14,005 3,766 0 1,024 756
2016 Estimated using AADF from previous year on this link 102,449 84,138 12,902 3,553 0 1,097 759
2015 Manual count 100,825 83,457 12,149 3,362 0 1,083 775
2014 Manual count 99,632 82,352 12,067 3,058 0 1,196 959
2013 Manual count 93,173 75,210 13,026 2,598 0 1,708 631
2012 Estimated using AADF from previous year on this link 92,800 74,801 11,565 4,155 0 1,195 1,084
2011 Manual count 92,882 75,886 10,718 4,020 0 1,251 1,007
2010 Estimated using AADF from previous year on this link 85,188 70,918 9,031 2,859 0 1,550 830
2009 Estimated using AADF from previous year on this link 86,388 72,439 8,726 2,811 0 1,640 772
2008 Manual count 86,151 72,367 8,488 2,913 0 1,640 743
2007 Manual count 83,719 69,071 8,843 3,017 0 1,824 964
2006 Manual count 97,379 81,772 9,518 3,334 0 1,390 1,365
2005 Manual count 87,689 72,624 9,507 3,100 0 1,445 1,013
2004 Manual count 97,167 81,532 9,137 3,546 0 1,627 1,325
2003 Manual count 94,433 79,277 8,934 3,371 0 1,697 1,154
2002 Manual count 95,837 81,118 8,337 3,618 0 1,602 1,162
2001 Manual count 96,245 80,589 9,656 3,070 0 1,650 1,280
2000 Manual count 93,264 79,045 7,998 4,031 0 1,115 1,075

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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 26012 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 26012 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. 360

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