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Road traffic statistics

58162

Details

AADF latest year 2024
Region London
Local authority Harrow
Road name A409
Road type Major
Start junction road A404
End junction road A4005
Link length 0.80km (0.50 miles)
Easting & Northing 515780,188300
Latitude & longitude 51.58168,-0.33039

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 17,153 13,224 1,614 364 119 1,380 570
2023 Manual count 17,158 13,302 1,605 367 107 1,320 565
2022 Estimated using AADF from previous year on this link 17,784 14,500 2,323 303 89 249 408
2021 Estimated using AADF from previous year on this link 17,164 14,117 2,140 288 87 216 403
2020 Estimated using AADF from previous year on this link 15,952 13,085 2,007 270 97 189 400
2019 Estimated using AADF from previous year on this link 20,605 17,262 2,303 312 79 248 480
2018 Estimated using AADF from previous year on this link 20,551 17,217 2,304 312 84 235 483
2017 Estimated using AADF from previous year on this link 20,550 17,232 2,258 325 85 233 502
2016 Manual count 20,600 17,237 2,277 338 87 225 523
2015 Estimated using AADF from previous year on this link 34,960 31,114 2,571 593 78 175 508
2014 Estimated using AADF from previous year on this link 34,992 31,220 2,471 588 68 185 529
2013 Estimated using AADF from previous year on this link 34,876 31,129 2,390 626 60 178 552
2012 Estimated using AADF from previous year on this link 34,575 30,861 2,332 602 73 183 598
2011 Manual count 35,182 31,461 2,388 558 85 168 607
2010 Estimated using AADF from previous year on this link 22,287 18,707 2,526 457 163 263 334
2009 Estimated using AADF from previous year on this link 22,833 19,226 2,554 459 168 280 314
2008 Estimated using AADF from previous year on this link 23,085 19,381 2,622 488 155 296 298
2007 Estimated using AADF from previous year on this link 23,607 19,838 2,678 494 133 304 293
2006 Manual count 23,799 20,140 2,621 435 103 311 292
2005 Estimated using AADF from previous year on this link 24,322 20,956 2,326 420 69 265 355
2004 Estimated using AADF from previous year on this link 24,521 21,190 2,278 432 68 289 332
2003 Estimated using AADF from previous year on this link 24,322 20,938 2,405 387 78 301 291
2002 Estimated using AADF from previous year on this link 24,505 21,366 2,185 410 54 292 252
2001 Estimated using AADF from previous year on this link 24,477 21,366 2,142 432 52 306 231
2000 Manual count 24,429 21,345 2,136 449 48 283 216

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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 58162 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 58162 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. 120

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