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Road traffic statistics

81171

Details

AADF latest year 2020
Region South East
Local authority Kent
Road name A21
Road type Major
Start junction road B2162
End junction road B2169
Link length 2.40km (1.49 miles)
Easting & Northing 568413,136342
Latitude & longitude 51.10164,0.40407

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
2020 Automatic counter 16,664 11,213 4,031 1,319 0 58 43
2019 Estimated using AADF from previous year on this link 20,191 14,337 4,362 1,346 0 84 61
2018 Estimated using AADF from previous year on this link 20,093 14,217 4,378 1,350 0 84 64
2017 Automatic counter 19,921 14,266 4,181 1,329 0 80 66
2016 Estimated using AADF from previous year on this link 19,128 13,915 3,827 1,246 0 77 63
2015 Estimated using AADF from previous year on this link 18,383 13,511 3,544 1,193 0 74 61
2014 Manual count 17,562 13,116 3,188 1,124 0 72 62
2013 Estimated using AADF from previous year on this link 15,037 10,868 3,050 854 5 84 181
2012 Estimated using AADF from previous year on this link 14,958 10,999 2,873 830 5 80 176
2011 Estimated using AADF from previous year on this link 14,918 11,079 2,759 825 5 82 173
2010 Estimated using AADF from previous year on this link 14,929 11,146 2,697 831 5 84 171
2009 Estimated using AADF from previous year on this link 15,119 11,421 2,628 815 5 95 160
2008 Estimated using AADF from previous year on this link 15,233 11,571 2,544 874 5 91 153
2007 Estimated using AADF from previous year on this link 15,314 11,652 2,539 878 5 94 151
2006 Manual count 14,863 11,429 2,316 880 5 95 143

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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 81171 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 81171 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. 15
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. 30
Raw counts Vehicle counts recorded at this count point. 48

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