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Road traffic statistics

37108

Details

AADF latest year 2024
Region London
Local authority Harrow
Road name A404
Road type Major
Start junction road B458
End junction road A409/A4006 roundabout
Link length 0.60km (0.37 miles)
Easting & Northing 516000,187920
Latitude & longitude 51.57822,-0.32734

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 25,674 20,085 3,214 447 240 811 1,118
2023 Estimated using AADF from previous year on this link 25,733 20,204 3,196 451 215 776 1,107
2022 Estimated using AADF from previous year on this link 25,705 20,246 3,140 456 209 765 1,098
2021 Manual count 24,783 19,711 2,892 432 204 663 1,084
2020 Estimated using AADF from previous year on this link 19,244 15,773 2,067 365 130 189 850
2019 Estimated using AADF from previous year on this link 24,867 20,808 2,371 421 105 248 1,020
2018 Estimated using AADF from previous year on this link 24,808 20,754 2,372 422 112 235 1,026
2017 Manual count 24,831 20,772 2,324 435 114 233 1,066
2016 Estimated using AADF from previous year on this link 26,327 22,942 2,051 451 103 122 761
2015 Estimated using AADF from previous year on this link 26,689 23,426 1,988 442 99 114 720
2014 Estimated using AADF from previous year on this link 26,728 23,505 1,911 442 87 120 751
2013 Manual count 26,658 23,437 1,848 474 77 116 783
2012 Estimated using AADF from previous year on this link 23,652 19,688 2,384 521 29 271 788
2011 Estimated using AADF from previous year on this link 24,049 20,071 2,441 488 33 249 800
2010 Estimated using AADF from previous year on this link 24,092 20,131 2,453 483 33 250 775
2009 Manual count 24,638 20,690 2,480 472 34 267 729
2008 Estimated using AADF from previous year on this link 31,060 26,914 2,450 412 95 270 1,014
2007 Estimated using AADF from previous year on this link 31,742 27,548 2,503 418 81 276 997
2006 Estimated using AADF from previous year on this link 32,058 27,967 2,448 370 63 281 992
2005 Estimated using AADF from previous year on this link 31,515 27,463 2,469 377 50 259 947
2004 Estimated using AADF from previous year on this link 31,751 27,769 2,418 396 50 281 887
2003 Manual count 31,424 27,440 2,554 359 58 295 776
2002 Estimated using AADF from previous year on this link 30,016 26,503 2,154 456 125 297 606
2001 Estimated using AADF from previous year on this link 29,968 26,503 2,112 486 120 311 556
2000 Estimated using AADF from previous year on this link 29,901 26,476 2,106 513 109 287 519

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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 37108 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 37108 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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