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Road traffic statistics

17017

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A405
Road type Major
Start junction road A41
End junction road A412
Link length 2.40km (1.49 miles)
Easting & Northing 511001,200417
Latitude & longitude 51.69155,-0.39549

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 17,273 14,156 2,703 367 41 31 15
2023 Estimated using AADF from previous year on this link 17,011 13,945 2,656 365 40 30 15
2022 Estimated using AADF from previous year on this link 16,716 13,688 2,612 371 41 31 15
2021 Estimated using AADF from previous year on this link 15,624 12,815 2,409 359 46 28 14
2020 Manual count 14,216 11,632 2,210 334 56 27 13
2019 Estimated using AADF from previous year on this link 27,949 24,001 3,354 380 102 127 87
2018 Estimated using AADF from previous year on this link 27,689 23,704 3,383 380 93 136 86
2017 Estimated using AADF from previous year on this link 27,899 23,968 3,321 378 84 137 95
2016 Manual count 27,912 24,146 3,155 374 88 136 102
2015 Estimated using AADF from previous year on this link 17,976 15,043 2,264 414 36 111 144
2014 Estimated using AADF from previous year on this link 17,596 14,751 2,159 426 39 125 134
2013 Estimated using AADF from previous year on this link 17,061 14,362 2,019 411 40 131 139
2012 Estimated using AADF from previous year on this link 17,082 14,489 1,943 399 41 118 133
2011 Estimated using AADF from previous year on this link 17,275 14,719 1,920 391 43 123 122
2010 Estimated using AADF from previous year on this link 17,134 14,763 1,720 376 39 146 129
2009 Estimated using AADF from previous year on this link 17,093 14,852 1,611 363 39 153 114
2008 Estimated using AADF from previous year on this link 16,763 14,532 1,588 390 39 137 116
2007 Manual count 17,076 14,858 1,555 385 35 144 134
2006 Estimated using AADF from previous year on this link 15,928 13,461 1,581 739 138 47 100
2005 Estimated using AADF from previous year on this link 16,219 13,722 1,557 778 88 54 108
2004 Estimated using AADF from previous year on this link 16,770 14,384 1,462 744 104 66 114
2003 Manual count 16,389 14,199 1,327 624 129 100 139
2002 Estimated using AADF from previous year on this link 15,390 13,296 1,552 356 27 87 99
2001 Estimated using AADF from previous year on this link 15,089 13,087 1,447 372 26 84 99
2000 Manual count 15,516 13,506 1,437 398 27 80 95

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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 17017 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 17017 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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