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Road traffic statistics

38786

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A412
Road type Major
Start junction road A404
End junction road A4178
Link length 5.60km (3.48 miles)
Easting & Northing 506000,194710
Latitude & longitude 51.64122,-0.46954

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 18,202 15,643 2,235 167 35 79 77
2023 Estimated using AADF from previous year on this link 17,927 15,410 2,196 168 35 77 77
2022 Estimated using AADF from previous year on this link 17,609 15,126 2,159 170 36 78 76
2021 Estimated using AADF from previous year on this link 16,459 14,161 1,992 164 40 71 71
2020 Estimated using AADF from previous year on this link 14,970 12,854 1,827 153 49 67 69
2019 Estimated using AADF from previous year on this link 19,367 16,922 2,070 175 43 91 109
2018 Manual count 19,181 16,713 2,088 175 39 97 107
2017 Estimated using AADF from previous year on this link 21,677 17,865 3,216 311 40 110 174
2016 Estimated using AADF from previous year on this link 21,660 17,998 3,055 311 42 109 187
2015 Estimated using AADF from previous year on this link 21,139 17,721 2,797 307 45 112 202
2014 Estimated using AADF from previous year on this link 21,334 18,053 2,659 309 48 110 203
2013 Estimated using AADF from previous year on this link 21,160 18,242 2,335 288 50 103 192
2012 Manual count 21,250 18,346 2,309 289 51 103 204
2011 Estimated using AADF from previous year on this link 21,176 17,957 2,689 258 74 158 114
2010 Estimated using AADF from previous year on this link 21,177 18,047 2,609 258 67 149 114
2009 Estimated using AADF from previous year on this link 21,565 18,434 2,596 264 67 162 109
2008 Manual count 21,688 18,734 2,397 273 67 172 112
2007 Manual count 22,399 19,062 2,534 503 32 155 145
2006 Manual count 21,391 18,481 2,174 436 30 148 152
2005 Manual count 22,712 19,710 2,018 605 37 201 178
2004 Manual count 25,207 21,868 2,250 683 40 223 183
2003 Manual count 23,204 20,206 1,996 562 63 258 182
2002 Manual count 23,941 20,911 2,035 618 38 204 173
2001 Manual count 25,752 22,553 2,359 427 35 161 252
2000 Manual count 23,118 20,165 2,176 427 16 111 239

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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 38786 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 38786 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. 264

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