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Road traffic statistics

27093

Details

AADF latest year 2024
Region London
Local authority Harrow
Road name A409
Road type Major
Start junction road A410
End junction road A4140
Link length 2.50km (1.55 miles)
Easting & Northing 514980,192000
Latitude & longitude 51.6151,-0.34071

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 Manual count 11,757 9,857 1,349 190 26 152 209
2023 Automatic counter 10,923 9,059 1,461 180 47 80 144
2022 Automatic counter 11,102 9,227 1,463 187 45 80 146
2021 Automatic counter 10,697 8,960 1,346 178 44 70 144
2020 Estimated using AADF from previous year on this link 10,569 8,847 1,333 175 50 64 150
2019 Estimated using AADF from previous year on this link 13,665 11,671 1,529 202 40 83 180
2018 Estimated using AADF from previous year on this link 13,632 11,640 1,529 202 43 79 181
2017 Estimated using AADF from previous year on this link 13,627 11,651 1,499 211 43 79 189
2016 Manual count 13,657 11,654 1,511 219 44 76 196
2015 Estimated using AADF from previous year on this link 11,021 9,227 1,248 275 25 74 196
2014 Estimated using AADF from previous year on this link 11,017 9,258 1,199 276 21 78 205
2013 Estimated using AADF from previous year on this link 10,978 9,232 1,160 297 19 75 214
2012 Estimated using AADF from previous year on this link 10,879 9,152 1,132 287 23 77 232
2011 Estimated using AADF from previous year on this link 11,062 9,330 1,159 267 27 71 235
2010 Estimated using AADF from previous year on this link 11,085 9,358 1,164 264 27 71 228
2009 Estimated using AADF from previous year on this link 11,346 9,618 1,176 261 28 76 215
2008 Estimated using AADF from previous year on this link 11,465 9,695 1,207 278 26 81 204
2007 Manual count 11,723 9,923 1,233 284 22 83 200
2006 Estimated using AADF from previous year on this link 13,211 11,528 1,015 414 40 101 153
2005 Manual count 13,006 11,320 1,023 423 33 93 147
2004 Estimated using AADF from previous year on this link 13,117 10,923 1,261 433 72 220 280
2003 Estimated using AADF from previous year on this link 12,985 10,794 1,332 384 83 230 245
2002 Estimated using AADF from previous year on this link 13,061 11,014 1,209 403 57 222 213
2001 Manual count 13,050 11,014 1,185 423 55 232 196
2000 Estimated using AADF from previous year on this link 12,688 10,747 1,143 437 41 140 221

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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 27093 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 27093 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. 120

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