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Road traffic statistics

99748

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A4180
Road type Major
Start junction road LA Boundary
End junction road A40
Link length 0.80km (0.50 miles)
Easting & Northing 511200,184000
Latitude & longitude 51.54395,-0.39782

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 24,769 19,479 3,923 750 188 389 228
2023 Manual count 24,850 19,594 3,900 757 168 372 226
2022 Estimated using AADF from previous year on this link 23,772 18,330 3,931 1,000 143 255 257
2021 Estimated using AADF from previous year on this link 22,903 17,846 3,621 962 140 221 254
2020 Estimated using AADF from previous year on this link 21,273 16,542 3,396 890 156 194 252
2019 Manual count 27,319 21,821 3,896 1,046 126 254 302
2018 Estimated using AADF from previous year on this link 22,503 18,488 3,034 562 94 273 146
2017 Estimated using AADF from previous year on this link 22,480 18,505 2,973 580 96 271 152
2016 Estimated using AADF from previous year on this link 22,527 18,510 2,998 599 98 261 158
2015 Manual count 22,777 18,901 2,907 576 95 243 150
2014 Estimated using AADF from previous year on this link 22,962 18,882 2,672 1,001 18 123 283
2013 Estimated using AADF from previous year on this link 22,884 18,827 2,585 1,057 16 119 295
2012 Estimated using AADF from previous year on this link 22,629 18,665 2,521 1,001 20 122 320
2011 Estimated using AADF from previous year on this link 22,961 19,028 2,582 914 23 112 325
2010 Estimated using AADF from previous year on this link 22,990 19,085 2,595 883 23 112 315
2009 Manual count 23,554 19,614 2,624 901 23 119 296
2008 Manual count 26,989 22,580 2,827 1,053 57 295 234
2007 Estimated using AADF from previous year on this link 28,614 23,899 2,965 1,108 220 250 392
2006 Estimated using AADF from previous year on this link 28,800 24,262 2,901 992 171 255 390
2005 Estimated using AADF from previous year on this link 28,371 23,825 2,926 1,013 138 234 373
2004 Manual count 28,608 24,090 2,866 1,049 135 255 348
2003 Estimated using AADF from previous year on this link 29,045 23,899 2,987 1,300 100 512 347
2002 Manual count 29,308 24,387 2,713 1,412 69 495 301
2001 Estimated using AADF from previous year on this link 25,140 20,248 2,823 1,232 158 539 298
2000 Manual count 25,103 20,228 2,815 1,283 144 499 278

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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 99748 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 99748 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. 192

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