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Road traffic statistics

8510

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A404
Road type Major
Start junction road A4145
End junction road LA Boundary
Link length 2.50km (1.55 miles)
Easting & Northing 507155,192781
Latitude & longitude 51.62366,-0.45345

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 18,230 15,098 2,669 339 33 82 42
2023 Estimated using AADF from previous year on this link 17,954 14,873 2,622 338 32 79 42
2022 Estimated using AADF from previous year on this link 17,641 14,598 2,578 343 33 81 41
2021 Estimated using AADF from previous year on this link 16,488 13,667 2,378 330 37 74 38
2020 Estimated using AADF from previous year on this link 15,001 12,406 2,182 307 45 70 37
2019 Estimated using AADF from previous year on this link 19,307 16,332 2,472 349 39 94 59
2018 Manual count 19,133 16,130 2,494 350 36 100 58
2017 Estimated using AADF from previous year on this link 22,255 18,398 3,245 396 35 147 71
2016 Estimated using AADF from previous year on this link 22,229 18,534 3,082 392 36 145 76
2015 Estimated using AADF from previous year on this link 21,751 18,307 2,854 368 36 145 77
2014 Estimated using AADF from previous year on this link 20,902 17,771 2,568 345 37 140 78
2013 Estimated using AADF from previous year on this link 20,317 17,371 2,392 349 46 136 70
2012 Manual count 20,364 17,581 2,253 334 46 129 67
2011 Estimated using AADF from previous year on this link 20,239 17,375 2,199 431 46 171 63
2010 Manual count 20,301 17,480 2,150 435 53 173 63
2009 Manual count 20,965 17,840 2,427 424 36 198 76
2008 Estimated using AADF from previous year on this link 22,872 19,250 2,906 448 20 219 49
2007 Estimated using AADF from previous year on this link 23,012 19,386 2,900 450 20 227 49
2006 Manual count 22,863 19,523 2,617 447 19 225 51
2005 Estimated using AADF from previous year on this link 20,980 17,486 2,672 522 30 241 59
2004 Estimated using AADF from previous year on this link 20,996 17,609 2,554 520 29 251 62
2003 Estimated using AADF from previous year on this link 20,415 17,314 2,295 484 29 247 75
2002 Manual count 19,784 16,942 2,073 466 35 228 75
2001 Estimated using AADF from previous year on this link 19,851 17,195 2,007 423 8 150 76
2000 Manual count 19,215 16,678 1,901 426 9 136 74

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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 8510 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 8510 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. 168

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