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Road traffic statistics

17024

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A408
Road type Major
Start junction road A4
End junction road A3044
Link length 1.80km (1.12 miles)
Easting & Northing 507164,177997
Latitude & longitude 51.49078,-0.45782

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 6,487 5,299 703 94 131 138 252
2023 Estimated using AADF from previous year on this link 6,507 5,330 699 95 117 132 250
2022 Estimated using AADF from previous year on this link 6,503 5,341 687 97 114 130 248
2021 Manual count 6,282 5,200 633 92 111 113 245
2020 Estimated using AADF from previous year on this link 8,143 6,526 1,165 180 104 27 245
2019 Estimated using AADF from previous year on this link 10,488 8,609 1,337 212 84 36 294
2018 Estimated using AADF from previous year on this link 10,461 8,586 1,337 208 90 34 296
2017 Estimated using AADF from previous year on this link 10,483 8,594 1,311 237 91 34 308
2016 Estimated using AADF from previous year on this link 10,535 8,596 1,322 264 93 33 321
2015 Estimated using AADF from previous year on this link 10,606 8,778 1,281 214 90 30 303
2014 Estimated using AADF from previous year on this link 10,601 8,807 1,231 214 78 32 316
2013 Manual count 10,558 8,782 1,191 224 70 31 330
2012 Estimated using AADF from previous year on this link 11,118 9,438 835 274 233 101 469
2011 Estimated using AADF from previous year on this link 11,301 9,622 855 255 269 93 476
2010 Estimated using AADF from previous year on this link 11,316 9,651 860 250 271 93 462
2009 Estimated using AADF from previous year on this link 11,568 9,919 870 246 280 99 434
2008 Estimated using AADF from previous year on this link 11,668 9,999 893 259 258 105 412
2007 Estimated using AADF from previous year on this link 11,919 10,234 912 260 221 108 405
2006 Estimated using AADF from previous year on this link 12,028 10,390 892 233 171 110 403
2005 Manual count 11,822 10,202 900 235 138 100 385
2004 Estimated using AADF from previous year on this link 10,943 9,213 865 216 182 166 483
2003 Estimated using AADF from previous year on this link 10,808 9,103 913 196 212 173 423
2002 Manual count 10,868 9,289 829 215 146 168 367
2001 Estimated using AADF from previous year on this link 12,669 10,728 1,298 162 136 167 314
2000 Estimated using AADF from previous year on this link 12,632 10,717 1,294 173 123 155 293

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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 17024 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 17024 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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