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Road traffic statistics

49016

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A4251
Road type Major
Start junction road B4505
End junction road A4146
Link length 1.00km (0.62 miles)
Easting & Northing 504565,206015
Latitude & longitude 51.7431,-0.48689

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 19,725 16,377 2,627 315 166 147 258
2023 Estimated using AADF from previous year on this link 19,430 16,133 2,581 316 164 142 257
2022 Estimated using AADF from previous year on this link 19,093 15,835 2,538 320 166 144 255
2021 Estimated using AADF from previous year on this link 17,846 14,826 2,341 310 186 132 237
2020 Manual count 16,248 13,457 2,148 289 228 125 230
2019 Estimated using AADF from previous year on this link 20,514 17,066 2,515 450 139 144 338
2018 Estimated using AADF from previous year on this link 20,333 16,855 2,538 452 127 154 334
2017 Estimated using AADF from previous year on this link 20,507 17,042 2,491 449 115 156 369
2016 Estimated using AADF from previous year on this link 20,532 17,169 2,366 448 120 154 395
2015 Manual count 20,098 16,905 2,166 443 129 158 426
2014 Estimated using AADF from previous year on this link 22,090 18,336 2,838 349 136 160 407
2013 Estimated using AADF from previous year on this link 21,877 18,528 2,492 323 140 151 383
2012 Estimated using AADF from previous year on this link 21,973 18,634 2,464 317 142 151 407
2011 Estimated using AADF from previous year on this link 22,173 18,713 2,566 348 150 167 379
2010 Manual count 22,176 18,807 2,488 344 136 158 379
2009 Estimated using AADF from previous year on this link 22,076 17,968 3,116 520 71 205 267
2008 Estimated using AADF from previous year on this link 22,163 18,260 2,878 535 71 217 273
2007 Estimated using AADF from previous year on this link 22,421 18,614 2,749 554 64 233 271
2006 Estimated using AADF from previous year on this link 23,125 19,532 2,519 561 101 231 282
2005 Manual count 23,010 19,474 2,479 549 64 222 286
2004 Estimated using AADF from previous year on this link 23,119 19,404 2,492 770 51 234 219
2003 Estimated using AADF from previous year on this link 23,142 19,365 2,515 762 62 265 235
2002 Manual count 23,159 19,640 2,307 712 70 236 264
2001 Estimated using AADF from previous year on this link 21,876 18,776 2,034 513 82 230 323
2000 Estimated using AADF from previous year on this link 21,507 18,408 2,042 518 86 222 317

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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 49016 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 49016 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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