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Road traffic statistics

78320

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A405
Road type Major
Start junction road Tippendell Lane
End junction road A414
Link length 1.00km (0.62 miles)
Easting & Northing 514000,204660
Latitude & longitude 51.72908,-0.35073

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 27,309 21,258 4,624 1,301 13 108 18
2023 Estimated using AADF from previous year on this link 26,986 21,005 4,543 1,311 14 109 18
2022 Manual count 26,449 20,497 4,455 1,361 14 117 19
2021 Estimated using AADF from previous year on this link 23,942 18,443 3,939 1,360 6 170 31
2020 Estimated using AADF from previous year on this link 21,764 16,865 3,440 1,269 8 164 26
2019 Manual count 28,791 23,095 4,019 1,417 6 220 41
2018 Estimated using AADF from previous year on this link 28,855 23,065 4,037 1,492 1 242 20
2017 Manual count 28,769 23,175 3,855 1,471 1 247 21
2016 Estimated using AADF from previous year on this link 26,044 20,392 3,864 1,524 15 171 93
2015 Estimated using AADF from previous year on this link 25,411 20,079 3,538 1,520 16 175 100
2014 Estimated using AADF from previous year on this link 25,620 20,454 3,363 1,530 17 172 101
2013 Manual count 25,305 20,668 2,954 1,426 17 162 95
2012 Estimated using AADF from previous year on this link 24,741 20,284 2,868 1,368 20 165 56
2011 Estimated using AADF from previous year on this link 25,087 20,370 2,987 1,495 21 183 52
2010 Estimated using AADF from previous year on this link 25,098 20,473 2,897 1,503 19 173 52
2009 Manual count 25,625 20,912 2,883 1,592 19 188 50
2008 Estimated using AADF from previous year on this link 25,245 19,924 3,134 1,723 31 362 102
2007 Estimated using AADF from previous year on this link 25,586 20,310 2,994 1,792 28 389 101
2006 Estimated using AADF from previous year on this link 26,368 21,311 2,744 1,823 45 385 105
2005 Manual count 26,242 21,247 2,701 1,817 29 370 107
2004 Estimated using AADF from previous year on this link 25,479 20,346 2,594 2,142 7 328 69
2003 Estimated using AADF from previous year on this link 25,500 20,305 2,617 2,132 9 373 73
2002 Manual count 25,451 20,593 2,401 2,043 10 332 82
2001 Estimated using AADF from previous year on this link 25,558 20,634 2,396 2,120 10 328 80
2000 Estimated using AADF from previous year on this link 25,232 20,230 2,405 2,202 10 316 79

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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 78320 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 78320 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. 168

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