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Road traffic statistics

28319

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A411
Road type Major
Start junction road A412
End junction road A411 Exchange Rd
Link length 0.60km (0.37 miles)
Easting & Northing 510851,196840
Latitude & longitude 51.65943,-0.39879

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 26,186 21,870 2,534 298 4 765 719
2023 Estimated using AADF from previous year on this link 25,789 21,544 2,490 297 4 742 716
2022 Estimated using AADF from previous year on this link 25,358 21,146 2,448 302 4 752 710
2021 Manual count 23,696 19,798 2,258 291 4 688 660
2020 Estimated using AADF from previous year on this link 19,413 16,898 1,999 242 25 115 160
2019 Estimated using AADF from previous year on this link 25,195 22,247 2,265 275 22 155 253
2018 Estimated using AADF from previous year on this link 24,948 21,971 2,285 276 20 165 250
2017 Manual count 25,176 22,216 2,243 274 18 167 276
2016 Estimated using AADF from previous year on this link 25,063 21,467 2,626 388 104 249 332
2015 Estimated using AADF from previous year on this link 24,538 21,138 2,404 383 111 254 359
2014 Estimated using AADF from previous year on this link 24,817 21,533 2,286 386 120 250 362
2013 Manual count 24,703 21,758 2,007 361 123 235 341
2012 Estimated using AADF from previous year on this link 26,301 23,091 2,334 375 67 226 275
2011 Estimated using AADF from previous year on this link 26,545 23,189 2,430 419 71 251 256
2010 Estimated using AADF from previous year on this link 26,576 23,306 2,357 421 64 236 256
2009 Manual count 27,085 23,805 2,346 434 64 256 244
2008 Estimated using AADF from previous year on this link 27,820 24,656 2,332 378 8 236 218
2007 Estimated using AADF from previous year on this link 28,226 25,134 2,227 396 7 253 216
2006 Estimated using AADF from previous year on this link 29,293 26,374 2,041 403 11 250 225
2005 Manual count 29,172 26,295 2,009 400 7 240 228
2004 Estimated using AADF from previous year on this link 26,734 23,428 2,178 487 25 354 287
2003 Estimated using AADF from previous year on this link 26,771 23,381 2,198 481 31 403 308
2002 Estimated using AADF from previous year on this link 26,881 23,713 2,016 448 35 359 345
2001 Estimated using AADF from previous year on this link 26,926 23,760 2,012 461 34 356 337
2000 Estimated using AADF from previous year on this link 26,457 23,294 2,020 469 35 343 331

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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 28319 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 28319 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. 120

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