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Road traffic statistics

9017

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A4251
Road type Major
Start junction road Hall Park Gate, Berkhamstead
End junction road A41
Link length 2.80km (1.74 miles)
Easting & Northing 500840,206880
Latitude & longitude 51.75155,-0.54057

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 8,932 7,442 1,228 150 69 39 72
2023 Estimated using AADF from previous year on this link 8,822 7,353 1,207 151 72 39 72
2022 Estimated using AADF from previous year on this link 8,627 7,176 1,183 153 76 42 73
2021 Estimated using AADF from previous year on this link 8,003 6,686 1,062 149 78 38 68
2020 Estimated using AADF from previous year on this link 7,273 6,114 928 137 104 37 58
2019 Estimated using AADF from previous year on this link 9,749 8,372 1,084 154 81 50 90
2018 Manual count 9,731 8,354 1,088 153 67 46 91
2017 Estimated using AADF from previous year on this link 9,408 7,137 1,887 175 46 135 75
2016 Estimated using AADF from previous year on this link 9,313 7,145 1,783 170 45 139 77
2015 Estimated using AADF from previous year on this link 9,088 7,058 1,651 163 46 139 78
2014 Estimated using AADF from previous year on this link 9,066 7,142 1,542 161 46 145 76
2013 Estimated using AADF from previous year on this link 8,852 7,043 1,435 159 57 141 74
2012 Estimated using AADF from previous year on this link 8,892 7,176 1,337 159 58 140 81
2011 Estimated using AADF from previous year on this link 9,046 7,383 1,274 156 62 151 82
2010 Estimated using AADF from previous year on this link 8,935 7,361 1,205 152 70 139 78
2009 Estimated using AADF from previous year on this link 9,056 7,503 1,171 148 68 158 76
2008 Manual count 9,132 7,594 1,149 161 60 152 76
2007 Estimated using AADF from previous year on this link 10,474 8,556 1,322 341 66 147 108
2006 Estimated using AADF from previous year on this link 10,542 8,785 1,198 312 66 147 100
2005 Estimated using AADF from previous year on this link 10,275 8,545 1,142 308 68 174 106
2004 Manual count 10,250 8,554 1,088 315 66 189 104
2003 Estimated using AADF from previous year on this link 9,290 7,569 1,247 289 26 122 63
2002 Estimated using AADF from previous year on this link 9,058 7,501 1,106 291 31 99 61
2001 Manual count 8,876 7,412 1,025 281 29 101 57
2000 Estimated using AADF from previous year on this link 10,474 8,894 1,117 281 97 112 70

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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 9017 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 9017 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. 96

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