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Road traffic statistics

46001

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name M1
Road type Major
Start junction road 6A
End junction road 7
Link length 4.10km (2.55 miles)
Easting & Northing 510745,205944
Latitude & longitude 51.74127,-0.39744

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 Automatic counter 179,502 118,281 38,877 21,564 0 511 269
2023 Estimated using AADF from previous year on this link 187,285 124,404 39,648 22,410 0 542 283
2022 Automatic counter 183,104 121,042 38,391 22,843 0 558 270
2021 Manual count 149,341 97,336 30,798 20,540 0 452 214
2020 Automatic counter 148,476 97,422 28,809 21,414 0 422 409
2019 Manual count 163,886 117,238 27,217 18,249 0 593 589
2018 Automatic counter 180,436 131,751 26,266 21,054 0 639 725
2017 Manual count 164,271 120,998 23,167 18,861 0 585 660
2016 Estimated using AADF from previous year on this link 171,922 124,146 26,110 20,434 0 624 609
2015 Manual count 168,934 123,140 24,586 19,970 0 616 622
2014 Manual count 170,376 135,042 21,485 12,876 0 380 591
2013 Manual count 155,826 115,740 21,256 17,351 0 665 814
2012 Manual count 160,957 123,364 20,646 15,678 0 712 558
2011 Manual count 132,533 97,362 18,769 15,074 0 635 693
2010 Manual count 130,410 95,017 18,580 15,437 0 698 678
2009 Manual count 131,596 95,772 20,225 14,234 0 636 729
2008 Manual count 107,335 79,429 14,406 12,262 0 644 594
2007 Manual count 124,451 90,226 16,538 16,289 0 810 588
2006 Manual count 125,127 92,846 14,771 16,054 0 747 709
2005 Manual count 143,141 106,544 16,324 18,478 0 967 828
2004 Manual count 146,522 109,273 16,361 19,265 0 820 803
2003 Manual count 133,252 100,293 14,313 16,860 0 1,058 728
2002 Manual count 132,131 99,191 14,309 17,149 0 837 645
2001 Manual count 139,699 105,394 14,915 17,546 0 1,068 776
2000 Manual count 137,628 104,600 14,099 16,833 0 971 1,125

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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 46001 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 46001 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. 456

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