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Road traffic statistics

27074

Details

AADF latest year 2024
Region South East
Local authority Portsmouth
Road name A397
Road type Major
Start junction road M27
End junction road A3
Link length 1.20km (0.75 miles)
Easting & Northing 465570,105000
Latitude & longitude 50.84081,-1.07011

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 22,456 17,924 3,578 223 490 316 415
2023 Estimated using AADF from previous year on this link 22,113 17,656 3,515 222 484 307 413
2022 Estimated using AADF from previous year on this link 21,732 17,330 3,456 225 492 311 409
2021 Manual count 20,297 16,225 3,188 217 550 285 381
2020 Estimated using AADF from previous year on this link 15,935 13,130 2,146 103 823 324 232
2019 Estimated using AADF from previous year on this link 20,641 17,286 2,432 117 720 438 368
2018 Estimated using AADF from previous year on this link 20,474 17,072 2,454 118 656 467 364
2017 Manual count 20,661 17,262 2,408 117 594 472 401
2016 Estimated using AADF from previous year on this link 24,228 19,117 3,673 336 530 738 365
2015 Estimated using AADF from previous year on this link 23,664 18,823 3,362 330 569 755 394
2014 Estimated using AADF from previous year on this link 23,843 19,175 3,197 333 612 742 397
2013 Estimated using AADF from previous year on this link 23,564 19,376 2,807 309 630 698 374
2012 Manual count 23,662 19,486 2,776 305 638 697 398
2011 Estimated using AADF from previous year on this link 20,071 16,369 2,155 331 501 559 657
2010 Estimated using AADF from previous year on this link 20,058 16,451 2,090 332 455 527 658
2009 Estimated using AADF from previous year on this link 19,959 16,551 1,957 317 453 554 580
2008 Manual count 19,550 16,195 1,928 344 453 497 586
2007 Estimated using AADF from previous year on this link 20,289 16,615 2,502 200 398 403 569
2006 Estimated using AADF from previous year on this link 20,921 17,433 2,294 204 637 399 591
2005 Estimated using AADF from previous year on this link 20,823 17,381 2,258 200 407 384 600
2004 Manual count 21,227 17,827 2,200 209 480 380 611
2003 Estimated using AADF from previous year on this link 21,512 17,657 2,365 283 268 529 678
2002 Estimated using AADF from previous year on this link 21,573 17,908 2,170 263 300 472 760
2001 Manual count 21,594 17,944 2,166 274 288 467 743
2000 Estimated using AADF from previous year on this link 23,080 19,290 2,313 330 118 507 640

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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 27074 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 27074 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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