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Road traffic statistics

17827

Details

AADF latest year 2024
Region South East
Local authority Milton Keynes
Road name A421
Road type Major
Start junction road Rhoscolyn Drive
End junction road Grafton St
Link length 3.40km (2.11 miles)
Easting & Northing 485000,234630
Latitude & longitude 52.00362,-0.76315

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 34,129 28,391 4,027 1,519 3 160 32
2023 Estimated using AADF from previous year on this link 33,647 27,967 3,956 1,536 3 156 32
2022 Estimated using AADF from previous year on this link 33,096 27,451 3,890 1,565 3 158 32
2021 Manual count 30,978 25,701 3,588 1,515 3 144 29
2020 Estimated using AADF from previous year on this link 26,751 22,879 2,958 788 78 94 32
2019 Estimated using AADF from previous year on this link 34,548 30,120 3,352 898 68 127 50
2018 Estimated using AADF from previous year on this link 34,205 29,747 3,381 891 62 136 50
2017 Manual count 34,461 30,079 3,319 872 56 138 55
2016 Estimated using AADF from previous year on this link 31,917 26,300 4,139 1,219 4 197 62
2015 Estimated using AADF from previous year on this link 31,193 25,896 3,789 1,240 4 202 67
2014 Estimated using AADF from previous year on this link 31,479 26,380 3,602 1,231 4 198 67
2013 Estimated using AADF from previous year on this link 31,234 26,656 3,164 1,164 5 186 63
2012 Manual count 31,404 26,808 3,128 1,214 5 186 67
2011 Estimated using AADF from previous year on this link 26,629 22,205 3,040 1,214 46 91 79
2010 Manual count 26,649 22,317 2,949 1,218 42 86 79
2009 Estimated using AADF from previous year on this link 30,788 26,322 3,175 1,077 32 161 53
2008 Manual count 31,035 26,750 2,932 1,129 32 170 54
2007 Manual count 30,205 25,984 2,670 1,318 7 112 121
2006 Manual count 30,363 26,033 2,946 1,177 17 115 92
2005 Manual count 28,259 24,112 2,503 1,412 11 147 85
2004 Manual count 28,914 24,722 2,502 1,518 1 87 85
2003 Manual count 27,019 23,388 2,049 1,289 4 216 77
2002 Estimated using AADF from previous year on this link 24,581 20,838 2,485 976 6 209 73
2001 Manual count 24,646 20,880 2,480 1,008 6 207 71
2000 Manual count 29,538 25,343 2,530 1,215 45 336 114

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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 17827 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 17827 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. 288

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