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Road traffic statistics

18276

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A411
Road type Major
Start junction road A4145
End junction road A411 Beechen Grove split
Link length 0.60km (0.37 miles)
Easting & Northing 511209,196030
Latitude & longitude 51.65208,-0.39388

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 21,180 18,257 2,355 230 10 283 55
2023 Estimated using AADF from previous year on this link 20,857 17,985 2,314 230 10 274 54
2022 Manual count 20,493 17,653 2,275 233 10 278 54
2021 Estimated using AADF from previous year on this link 18,407 15,641 2,222 280 24 81 183
2020 Estimated using AADF from previous year on this link 16,749 14,197 2,038 260 30 77 177
2019 Estimated using AADF from previous year on this link 21,681 18,691 2,310 297 26 104 280
2018 Manual count 21,473 18,459 2,330 296 24 111 277
2017 Estimated using AADF from previous year on this link 23,790 20,052 3,119 379 20 183 57
2016 Estimated using AADF from previous year on this link 23,784 20,201 2,963 377 21 181 61
2015 Estimated using AADF from previous year on this link 23,224 19,890 2,713 369 22 185 66
2014 Estimated using AADF from previous year on this link 23,463 20,262 2,579 374 24 182 66
2013 Manual count 23,322 20,474 2,265 348 24 171 63
2012 Estimated using AADF from previous year on this link 24,056 21,161 2,248 368 60 189 90
2011 Estimated using AADF from previous year on this link 24,299 21,251 2,341 414 63 209 84
2010 Estimated using AADF from previous year on this link 24,330 21,358 2,271 420 57 197 84
2009 Manual count 24,798 21,816 2,260 428 57 214 80
2008 Estimated using AADF from previous year on this link 21,500 18,698 2,162 413 17 199 28
2007 Estimated using AADF from previous year on this link 21,792 19,060 2,065 426 15 213 28
2006 Estimated using AADF from previous year on this link 22,565 20,000 1,893 432 24 211 29
2005 Estimated using AADF from previous year on this link 22,461 19,940 1,863 426 15 203 29
2004 Estimated using AADF from previous year on this link 22,942 20,451 1,816 444 18 201 30
2003 Manual count 22,945 20,411 1,832 442 22 228 32
2002 Estimated using AADF from previous year on this link 24,455 21,633 2,083 426 25 251 62
2001 Estimated using AADF from previous year on this link 24,505 21,676 2,079 441 24 248 61
2000 Manual count 24,090 21,251 2,087 453 25 239 60

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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 18276 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 18276 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. 72

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