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Road traffic statistics

17026

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A411
Road type Major
Start junction road A5183
End junction road A1(T)
Link length 3.30km (2.05 miles)
Easting & Northing 519549,195373
Latitude & longitude 51.64446,-0.27361

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 18,548 15,112 3,093 149 36 129 65
2023 Estimated using AADF from previous year on this link 18,315 14,932 3,039 149 38 130 65
2022 Manual count 17,909 14,572 2,980 151 40 140 66
2021 Estimated using AADF from previous year on this link 13,226 10,795 2,155 131 10 93 51
2020 Estimated using AADF from previous year on this link 12,008 9,872 1,882 121 13 90 43
2019 Estimated using AADF from previous year on this link 16,041 13,518 2,199 136 10 121 67
2018 Manual count 16,010 13,489 2,206 135 8 113 68
2017 Estimated using AADF from previous year on this link 16,041 13,171 2,412 285 22 115 59
2016 Estimated using AADF from previous year on this link 15,921 13,187 2,279 276 22 118 61
2015 Estimated using AADF from previous year on this link 15,577 13,025 2,111 262 22 118 62
2014 Manual count 14,968 12,644 1,899 249 22 114 63
2013 Estimated using AADF from previous year on this link 14,492 12,089 1,951 263 17 113 75
2012 Estimated using AADF from previous year on this link 14,512 12,235 1,838 259 17 107 73
2011 Estimated using AADF from previous year on this link 14,533 12,324 1,765 262 18 110 72
2010 Manual count 14,580 12,398 1,726 272 21 112 72
2009 Estimated using AADF from previous year on this link 15,913 13,340 2,100 310 10 108 55
2008 Manual count 16,037 13,516 2,033 332 9 103 53
2007 Estimated using AADF from previous year on this link 15,254 12,776 2,022 289 8 106 61
2006 Estimated using AADF from previous year on this link 15,145 12,867 1,825 283 8 106 64
2005 Estimated using AADF from previous year on this link 14,833 12,651 1,741 276 8 98 67
2004 Manual count 14,852 12,741 1,664 275 8 102 70
2003 Estimated using AADF from previous year on this link 17,666 15,050 1,883 404 23 224 105
2002 Manual count 17,126 14,726 1,701 385 28 207 107
2001 Estimated using AADF from previous year on this link 15,105 12,691 1,865 309 31 130 110
2000 Manual count 14,611 12,310 1,766 310 36 118 107

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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 17026 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 17026 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. 192

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