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Road traffic statistics

18537

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A411
Road type Major
Start junction road A4008
End junction road A4008
Link length 0.20km (0.12 miles)
Easting & Northing 511960,195420
Latitude & longitude 51.64645,-0.38322

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 Manual count 15,451 12,988 1,853 144 87 197 269
2023 Estimated using AADF from previous year on this link 12,679 10,247 1,914 274 74 68 176
2022 Estimated using AADF from previous year on this link 12,462 10,058 1,882 278 75 69 174
2021 Estimated using AADF from previous year on this link 11,647 9,416 1,736 268 84 64 162
2020 Estimated using AADF from previous year on this link 10,606 8,547 1,593 249 103 60 157
2019 Estimated using AADF from previous year on this link 13,671 11,252 1,805 284 90 81 249
2018 Estimated using AADF from previous year on this link 13,550 11,113 1,821 284 82 87 246
2017 Estimated using AADF from previous year on this link 13,665 11,237 1,787 283 74 88 271
2016 Manual count 13,676 11,320 1,698 281 78 87 290
2015 Estimated using AADF from previous year on this link 15,340 12,016 2,405 347 80 103 469
2014 Estimated using AADF from previous year on this link 14,989 11,783 2,293 360 86 117 436
2013 Estimated using AADF from previous year on this link 14,543 11,471 2,144 352 89 123 452
2012 Estimated using AADF from previous year on this link 14,530 11,574 2,063 350 90 110 433
2011 Estimated using AADF from previous year on this link 14,662 11,757 2,039 353 95 115 398
2010 Estimated using AADF from previous year on this link 14,529 11,792 1,827 353 86 136 421
2009 Estimated using AADF from previous year on this link 14,423 11,863 1,711 334 85 143 372
2008 Estimated using AADF from previous year on this link 14,162 11,608 1,686 364 85 128 376
2007 Manual count 14,455 11,869 1,651 368 76 134 433
2006 Estimated using AADF from previous year on this link 16,629 12,787 2,734 610 75 92 406
2005 Estimated using AADF from previous year on this link 16,901 13,035 2,693 631 48 105 437
2004 Estimated using AADF from previous year on this link 17,367 13,663 2,526 587 56 128 463
2003 Estimated using AADF from previous year on this link 17,024 13,488 2,295 481 70 195 565
2002 Estimated using AADF from previous year on this link 17,328 14,006 2,113 491 78 137 581
2001 Manual count 16,978 13,785 1,971 514 75 132 576
2000 Estimated using AADF from previous year on this link 18,388 15,176 2,058 440 86 228 486

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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 18537 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 18537 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. 25
Raw counts Vehicle counts recorded at this count point. 48

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