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Road traffic statistics

37759

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A4140
Road type Major
Start junction road A409
End junction road A411
Link length 1.00km (0.62 miles)
Easting & Northing 515000,194000
Latitude & longitude 51.63307,-0.33977

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 13,512 11,846 1,391 62 69 64 149
2023 Estimated using AADF from previous year on this link 13,308 11,669 1,367 62 69 62 149
2022 Estimated using AADF from previous year on this link 13,070 11,453 1,344 63 70 63 147
2021 Estimated using AADF from previous year on this link 12,218 10,723 1,240 61 78 57 137
2020 Estimated using AADF from previous year on this link 11,114 9,733 1,137 56 96 54 133
2019 Estimated using AADF from previous year on this link 14,450 12,814 1,289 64 84 73 210
2018 Estimated using AADF from previous year on this link 14,306 12,655 1,300 64 76 78 208
2017 Manual count 14,445 12,796 1,276 64 69 79 229
2016 Estimated using AADF from previous year on this link 13,544 11,120 2,047 89 53 23 265
2015 Estimated using AADF from previous year on this link 13,220 10,949 1,874 87 57 23 286
2014 Estimated using AADF from previous year on this link 12,907 10,736 1,787 91 62 27 266
2013 Estimated using AADF from previous year on this link 12,517 10,453 1,671 89 63 28 276
2012 Estimated using AADF from previous year on this link 12,530 10,546 1,608 88 64 25 264
2011 Estimated using AADF from previous year on this link 12,658 10,713 1,589 87 68 26 243
2010 Estimated using AADF from previous year on this link 12,541 10,745 1,424 85 62 30 257
2009 Manual count 12,483 10,810 1,334 80 62 32 227
2008 Estimated using AADF from previous year on this link 14,243 11,801 2,070 161 109 69 142
2007 Estimated using AADF from previous year on this link 14,487 12,066 2,027 159 97 71 164
2006 Estimated using AADF from previous year on this link 14,614 12,263 1,925 170 157 75 181
2005 Estimated using AADF from previous year on this link 14,855 12,501 1,897 176 99 86 195
2004 Estimated using AADF from previous year on this link 15,359 13,103 1,779 165 118 105 207
2003 Estimated using AADF from previous year on this link 15,095 12,935 1,616 133 146 159 252
2002 Estimated using AADF from previous year on this link 15,427 13,432 1,488 136 163 112 259
2001 Manual count 15,114 13,220 1,388 141 157 108 257
2000 Estimated using AADF from previous year on this link 15,076 13,221 1,263 170 129 191 231

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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 37759 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 37759 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. 72

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