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Road traffic statistics

78345

Details

AADF latest year 2023
Region London
Local authority Hillingdon
Road name A40
Road type Major
Start junction road LA Boundary
End junction road B467 slips
Link length 0.20km (0.12 miles)
Easting & Northing 505750,185620
Latitude & longitude 51.55956,-0.47589

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
2023 Automatic counter 98,441 71,362 18,213 7,802 4 812 252
2022 Automatic counter 111,780 80,634 20,597 9,237 5 1,014 298
2021 Automatic counter 105,914 76,669 18,865 9,161 5 935 284
2020 Automatic counter 100,142 72,961 17,137 8,854 6 940 250
2019 Automatic counter 113,542 86,274 17,294 8,547 5 1,091 337
2018 Automatic counter 113,559 86,253 17,386 8,562 4 1,017 342
2017 Automatic counter 114,113 87,475 16,749 8,476 3 1,047 366
2016 Dependent on a neighbouring counted link 104,257 80,734 14,587 7,597 3 993 347
2015 Dependent on a neighbouring counted link 102,390 79,676 14,125 6,905 5 1,209 476
2014 Dependent on a neighbouring counted link 99,102 77,915 13,078 6,420 29 1,354 335
2013 Dependent on a neighbouring counted link 95,364 76,117 13,336 4,463 0 1,079 369
2012 Dependent on a neighbouring counted link 97,562 78,031 13,486 4,425 16 1,109 511
2011 Dependent on a neighbouring counted link 94,007 76,162 11,982 4,134 4 1,304 425
2010 Dependent on a neighbouring counted link 101,644 82,701 13,230 4,152 0 1,075 486
2009 Dependent on a neighbouring counted link 91,437 72,413 13,091 4,569 5 981 383
2008 Estimated using AADF from previous year on this link 91,121 70,729 12,414 6,190 3 1,207 581
2007 Dependent on a neighbouring counted link 91,698 71,227 12,390 6,266 3 1,243 572
2006 Estimated using AADF from previous year on this link 92,329 73,045 12,259 5,071 16 1,421 533
2005 Dependent on a neighbouring counted link 90,430 71,824 11,697 5,044 17 1,311 554
2004 Estimated using AADF from previous year on this link 97,871 78,001 11,628 6,402 6 1,383 457
2003 Dependent on a neighbouring counted link 95,113 76,698 10,447 6,054 7 1,361 553
2002 Dependent on a neighbouring counted link 98,682 79,250 11,867 5,696 6 1,378 491
2001 Dependent on a neighbouring counted link 94,387 77,319 10,891 4,561 10 1,167 449
2000 Dependent on a neighbouring counted link 101,689 83,415 9,341 6,027 23 2,217 689

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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 78345 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 78345 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. 24
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. 48
Raw counts Vehicle counts recorded at this count point. 0

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