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Road traffic statistics

57771

Details

AADF latest year 2018
Region London
Local authority Hillingdon
Road name A4180
Road type Major
Start junction road Reservoir Rd
End junction road Northgate
Link length 2.90km (1.80 miles)
Easting & Northing 508054,189643
Latitude & longitude 51.59528,-0.44143

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
2018 Estimated using AADF from previous year on this link 25,917 20,035 3,892 1,508 99 168 314
2017 Manual count 25,828 20,131 3,716 1,478 101 172 331
2016 Manual count 24,469 19,606 3,348 1,078 132 151 286
2015 Estimated using AADF from previous year on this link 26,122 19,399 4,393 1,533 100 144 652
2014 Estimated using AADF from previous year on this link 25,014 18,832 3,952 1,427 100 140 664
2013 Estimated using AADF from previous year on this link 24,249 18,407 3,682 1,434 126 135 590
2012 Estimated using AADF from previous year on this link 24,181 18,630 3,468 1,383 127 128 571
2011 Manual count 24,164 18,765 3,330 1,374 136 132 563
2010 Estimated using AADF from previous year on this link 12,539 10,825 1,151 268 22 147 148
2009 Estimated using AADF from previous year on this link 12,727 11,035 1,119 263 22 167 143
2008 Estimated using AADF from previous year on this link 12,856 11,169 1,099 284 19 161 143
2007 Manual count 13,282 11,598 1,099 295 19 161 129
2006 Estimated using AADF from previous year on this link 16,019 13,965 1,352 340 16 189 173
2005 Manual count 15,705 13,731 1,291 329 16 174 180
2004 Estimated using AADF from previous year on this link 15,570 13,501 1,378 342 14 233 116
2003 Manual count 15,199 13,276 1,238 316 14 229 140
2002 Estimated using AADF from previous year on this link 17,008 14,923 1,493 210 38 260 122
2001 Manual count 16,560 14,502 1,481 204 36 255 118
2000 Manual count 14,585 12,850 1,107 257 32 249 122

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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 57771 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 57771 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. 19
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. 38
Raw counts Vehicle counts recorded at this count point. 192

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