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Road traffic statistics

78353

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A411
Road type Major
Start junction road M25
End junction road Courtlands Drive
Link length 1.10km (0.68 miles)
Easting & Northing 508662,199326
Latitude & longitude 51.6822,-0.42966

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 22,657 19,423 2,609 216 54 193 217
2023 Manual count 22,314 19,133 2,563 215 53 187 216
2022 Estimated using AADF from previous year on this link 20,403 17,158 2,673 337 59 91 145
2021 Estimated using AADF from previous year on this link 19,072 16,064 2,465 325 66 83 135
2020 Estimated using AADF from previous year on this link 17,354 14,581 2,261 302 81 78 131
2019 Manual count 22,416 19,196 2,563 344 71 106 208
2018 Estimated using AADF from previous year on this link 24,028 20,291 2,916 468 90 210 142
2017 Estimated using AADF from previous year on this link 24,217 20,517 2,862 467 82 213 157
2016 Estimated using AADF from previous year on this link 24,233 20,670 2,719 466 85 211 168
2015 Manual count 23,756 20,416 2,518 442 86 210 170
2014 Estimated using AADF from previous year on this link 21,784 18,108 2,827 406 37 163 281
2013 Estimated using AADF from previous year on this link 21,154 17,700 2,634 413 46 158 249
2012 Estimated using AADF from previous year on this link 21,183 17,914 2,480 397 47 150 242
2011 Estimated using AADF from previous year on this link 21,212 18,044 2,382 394 50 154 238
2010 Manual count 21,269 18,153 2,328 396 58 156 236
2009 Manual count 23,492 20,365 2,295 458 82 197 177
2008 Estimated using AADF from previous year on this link 25,458 21,376 3,012 648 34 282 140
2007 Estimated using AADF from previous year on this link 25,618 21,528 3,006 656 34 290 138
2006 Estimated using AADF from previous year on this link 25,472 21,679 2,713 646 34 288 146
2005 Estimated using AADF from previous year on this link 24,955 21,317 2,589 631 34 266 152
2004 Estimated using AADF from previous year on this link 25,010 21,467 2,475 633 34 277 158
2003 Manual count 24,390 21,108 2,223 595 34 273 191
2002 Estimated using AADF from previous year on this link 23,683 20,654 2,009 575 40 252 193
2001 Estimated using AADF from previous year on this link 23,062 20,072 1,993 563 38 247 187
2000 Estimated using AADF from previous year on this link 22,331 19,469 1,888 569 44 224 181

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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 78353 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 78353 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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