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Road traffic statistics

73175

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A404
Road type Major
Start junction road road from North Hill, Chorleywood
End junction road M25
Link length 1.60km (0.99 miles)
Easting & Northing 503300,196720
Latitude & longitude 51.65978,-0.50795

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 18,749 14,731 3,324 549 69 87 58
2023 Estimated using AADF from previous year on this link 18,467 14,511 3,265 548 69 85 58
2022 Estimated using AADF from previous year on this link 18,154 14,243 3,211 556 70 86 57
2021 Estimated using AADF from previous year on this link 16,965 13,335 2,962 536 78 79 53
2020 Manual count 15,446 12,104 2,717 499 95 74 52
2019 Estimated using AADF from previous year on this link 20,719 17,280 2,788 472 58 107 72
2018 Estimated using AADF from previous year on this link 20,536 17,066 2,813 473 53 114 71
2017 Estimated using AADF from previous year on this link 20,682 17,256 2,761 471 48 116 78
2016 Manual count 20,673 17,384 2,623 468 50 114 84
2015 Estimated using AADF from previous year on this link 19,877 16,317 2,878 454 30 116 113
2014 Estimated using AADF from previous year on this link 19,446 16,000 2,744 466 33 132 105
2013 Estimated using AADF from previous year on this link 18,845 15,577 2,566 455 34 137 109
2012 Estimated using AADF from previous year on this link 18,863 15,716 2,469 450 34 123 104
2011 Manual count 19,084 15,965 2,440 454 36 129 96
2010 Estimated using AADF from previous year on this link 19,744 16,525 2,546 403 37 175 95
2009 Estimated using AADF from previous year on this link 19,668 16,625 2,384 391 37 184 84
2008 Estimated using AADF from previous year on this link 19,287 16,267 2,349 422 37 165 84
2007 Manual count 19,629 16,634 2,301 423 34 174 97
2006 Estimated using AADF from previous year on this link 19,933 17,421 1,843 453 65 101 115
2005 Manual count 20,294 17,758 1,816 479 41 116 125
2004 Estimated using AADF from previous year on this link 20,142 17,179 1,964 745 22 130 124
2003 Manual count 19,712 16,959 1,784 620 28 197 152
2002 Estimated using AADF from previous year on this link 20,182 17,610 1,643 634 32 138 157
2001 Estimated using AADF from previous year on this link 19,824 17,333 1,533 669 30 134 155
2000 Estimated using AADF from previous year on this link 20,396 17,888 1,523 709 32 128 148

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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 73175 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 73175 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. 144

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