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Road traffic statistics

28159

Details

AADF latest year 2024
Region South East
Local authority Portsmouth
Road name M27
Road type Major
Start junction road 12
End junction road A27
Link length 0.50km (0.31 miles)
Easting & Northing 464180,105400
Latitude & longitude 50.84456,-1.08977

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 Estimated using AADF from previous year on this link 36,449 29,108 6,030 1,070 0 153 88
2023 Estimated using AADF from previous year on this link 36,313 29,158 5,856 1,057 0 155 88
2022 Estimated using AADF from previous year on this link 35,351 28,370 5,670 1,067 0 159 84
2021 Estimated using AADF from previous year on this link 31,277 25,029 4,984 1,049 0 141 73
2020 Manual count 27,315 21,894 4,264 945 0 139 73
2019 Estimated using AADF from previous year on this link 44,062 37,582 4,865 1,227 0 289 98
2018 Manual count 43,496 37,014 4,869 1,216 0 299 98
2017 Estimated using AADF from previous year on this link 41,960 34,126 6,422 988 0 257 167
2016 Estimated using AADF from previous year on this link 41,471 34,163 5,923 937 0 277 171
2015 Estimated using AADF from previous year on this link 40,813 33,886 5,578 901 0 273 174
2014 Estimated using AADF from previous year on this link 40,133 33,797 5,013 855 0 280 188
2013 Manual count 39,387 33,506 4,567 852 0 284 178
2012 Estimated using AADF from previous year on this link 34,703 29,089 4,382 865 0 234 134
2011 Estimated using AADF from previous year on this link 35,186 29,636 4,274 893 0 256 127
2010 Estimated using AADF from previous year on this link 34,527 29,140 4,090 925 0 261 111
2009 Manual count 35,029 29,675 4,049 928 0 279 98
2008 Estimated using AADF from previous year on this link 35,613 29,361 4,776 1,066 0 219 191
2007 Estimated using AADF from previous year on this link 36,150 30,052 4,664 1,080 0 208 146
2006 Manual count 35,661 29,843 4,404 1,083 0 201 130
2005 Estimated using AADF from previous year on this link 37,750 30,650 4,934 1,570 0 413 183
2004 Estimated using AADF from previous year on this link 37,560 30,650 4,767 1,558 0 409 176
2003 Estimated using AADF from previous year on this link 36,308 29,815 4,326 1,414 0 460 293
2002 Estimated using AADF from previous year on this link 36,866 30,548 4,200 1,426 0 407 285
2001 Estimated using AADF from previous year on this link 36,136 30,156 3,911 1,366 0 420 283
2000 Manual count 34,987 29,277 3,700 1,317 0 416 277

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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 28159 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 28159 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. 144

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