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Road traffic statistics

57154

Details

AADF latest year 2024
Region South East
Local authority Buckinghamshire
Road name A421
Road type Major
Start junction road A413
End junction road B4033 Nash Rd
Link length 7.10km (4.41 miles)
Easting & Northing 472000,233380
Latitude & longitude 51.99422,-0.95275

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 16,013 12,296 2,349 1,275 0 62 31
2023 Estimated using AADF from previous year on this link 15,836 12,149 2,308 1,284 0 63 31
2022 Estimated using AADF from previous year on this link 15,554 11,856 2,263 1,336 0 68 32
2021 Manual count 14,467 11,046 2,032 1,298 0 61 30
2020 Estimated using AADF from previous year on this link 12,136 9,526 1,694 825 7 60 31
2019 Estimated using AADF from previous year on this link 16,071 13,044 1,980 918 6 81 48
2018 Estimated using AADF from previous year on this link 16,042 13,016 1,986 916 5 75 49
2017 Manual count 16,007 13,078 1,897 904 5 77 51
2016 Estimated using AADF from previous year on this link 16,693 13,103 2,524 902 4 119 46
2015 Estimated using AADF from previous year on this link 16,335 12,942 2,337 890 4 119 47
2014 Estimated using AADF from previous year on this link 15,663 12,563 2,103 835 4 115 47
2013 Estimated using AADF from previous year on this link 15,245 12,280 1,959 852 5 111 42
2012 Manual count 15,271 12,429 1,845 851 5 105 41
2011 Estimated using AADF from previous year on this link 13,244 10,706 1,689 697 4 93 59
2010 Estimated using AADF from previous year on this link 13,106 10,674 1,597 694 5 85 56
2009 Estimated using AADF from previous year on this link 13,280 10,881 1,552 697 5 96 54
2008 Manual count 13,471 11,013 1,523 789 4 92 54
2007 Manual count 15,393 12,680 1,482 1,125 2 59 47
2006 Manual count 15,358 12,524 1,491 1,231 3 63 49
2005 Manual count 14,589 11,871 1,447 1,123 1 88 60
2004 Manual count 15,195 12,158 1,379 1,383 6 217 58
2003 Manual count 14,500 11,967 1,260 1,152 4 61 60
2002 Manual count 15,182 12,273 1,453 1,319 0 61 76
2001 Manual count 17,101 14,146 1,614 1,004 41 161 176
2000 Manual count 14,213 11,417 1,227 1,188 1 230 151

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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 57154 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 57154 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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