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Road traffic statistics

78347

Details

AADF latest year 2019
Region London
Local authority Hillingdon
Road name A40
Road type Major
Start junction road B467 slips
End junction road A437
Link length 0.30km (0.19 miles)
Easting & Northing 506800,185280
Latitude & longitude 51.55631,-0.46086

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
2019 Manual count 104,548 80,552 16,026 6,522 23 929 519
2018 Manual count 106,522 82,968 15,520 6,476 23 1,012 547
2017 Estimated using AADF from previous year on this link 101,401 78,768 16,376 4,621 33 1,182 454
2016 Manual count 101,707 78,792 16,514 4,787 34 1,140 473
2015 Manual count 95,270 74,368 14,530 4,773 61 1,026 572
2014 Manual count 99,193 78,492 14,095 4,780 27 1,229 596
2013 Manual count 107,104 86,144 12,198 6,615 0 1,383 765
2012 Manual count 89,389 67,509 15,720 4,947 0 651 561
2011 Manual count 77,622 61,951 8,996 5,435 0 781 459
2010 Manual count 113,072 88,109 16,383 7,140 32 837 603
2009 Manual count 101,783 84,429 10,893 4,827 3 1,102 532
2008 Manual count 79,958 64,753 8,701 5,101 0 1,111 292
2007 Manual count 82,529 68,625 8,309 4,412 2 754 429
2006 Manual count 98,317 76,766 14,581 4,620 22 1,776 574
2005 Manual count 100,126 80,296 11,666 6,720 9 935 509
2004 Manual count 107,059 87,048 11,233 7,498 6 743 537
2003 Manual count 103,294 82,249 12,058 7,414 4 1,125 448
2002 Estimated using AADF from previous year on this link 104,069 83,928 10,951 7,713 3 1,088 389
2001 Estimated using AADF from previous year on this link 104,481 83,928 10,737 8,322 3 1,137 357
2000 Estimated using AADF from previous year on this link 104,574 83,844 10,704 8,641 3 1,052 333

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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 78347 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 78347 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. 20
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. 40
Raw counts Vehicle counts recorded at this count point. 384

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