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Road traffic statistics

49028

Details

AADF latest year 2024
Region London
Local authority Hillingdon
Road name A312
Road type Major
Start junction road A4020
End junction road LA Boundary
Link length 2.00km (1.24 miles)
Easting & Northing 511273,181332
Latitude & longitude 51.51996,-0.39761

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 Automatic counter 49,160 38,828 7,181 2,208 138 819 124
2023 Manual count 55,840 44,205 8,090 2,521 123 886 139
2022 Automatic counter 48,303 39,869 6,700 1,073 110 513 148
2021 Automatic counter 44,900 37,394 5,944 993 108 429 141
2020 Automatic counter 44,344 36,889 5,924 982 121 400 148
2019 Automatic counter 51,445 43,672 6,111 1,030 98 471 160
2018 Automatic counter 51,673 43,876 6,157 1,028 105 450 162
2017 Automatic counter 50,423 42,862 5,883 1,079 104 436 164
2016 Manual count 53,014 41,881 8,419 1,821 116 657 236
2015 Manual count 54,741 44,509 7,203 1,994 150 783 251
2014 Manual count 54,553 44,132 7,288 2,262 131 537 335
2013 Manual count 52,455 43,430 5,641 2,412 1 688 285
2012 Manual count 53,877 43,337 6,774 2,852 3 475 439
2011 Manual count 60,404 53,383 4,798 1,605 0 467 151
2010 Manual count 52,621 44,639 5,084 2,349 4 423 126
2009 Manual count 56,193 47,757 5,512 2,106 1 567 251
2008 Manual count 42,698 33,642 5,398 2,986 0 415 257
2007 Manual count 57,234 45,129 8,644 2,348 52 751 362
2006 Manual count 53,802 42,912 7,839 2,240 77 435 376
2005 Manual count 56,608 47,785 5,180 2,719 125 565 359
2004 Manual count 60,584 50,197 6,300 3,148 44 623 316
2003 Manual count 58,043 47,385 6,906 2,802 115 582 368
2002 Estimated using AADF from previous year on this link 61,741 51,667 6,637 2,525 8 725 187
2001 Manual count 61,808 51,667 6,506 2,707 8 757 171
2000 Manual count 62,180 52,472 5,746 3,282 12 508 172

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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 49028 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 49028 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. 408

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