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Road traffic statistics

99154

Details

AADF latest year 2024
Region South East
Local authority West Sussex
Road name A27
Road type Major
Start junction road A285 W
End junction road A285 E
Link length 2.40km (1.49 miles)
Easting & Northing 488860,106010
Latitude & longitude 50.84679,-0.73916

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 43,268 33,047 8,187 1,751 0 225 59
2023 Manual count 42,785 32,806 7,960 1,740 0 221 59
2022 Estimated using AADF from previous year on this link 44,379 34,036 8,042 1,972 0 291 38
2021 Manual count 39,039 29,507 7,342 1,901 0 254 35
2020 Manual count 34,527 26,589 5,848 1,748 5 334 8
2019 Estimated using AADF from previous year on this link 46,911 36,598 7,475 2,278 6 422 138
2018 Estimated using AADF from previous year on this link 46,641 36,292 7,502 2,285 6 418 145
2017 Estimated using AADF from previous year on this link 46,381 36,415 7,164 2,254 6 399 149
2016 Estimated using AADF from previous year on this link 45,871 36,431 6,725 2,174 6 396 146
2015 Manual count 44,206 35,372 6,227 2,084 5 381 143
2014 Estimated using AADF from previous year on this link 43,750 36,074 5,313 1,800 6 428 135
2013 Manual count 42,531 35,262 4,950 1,784 7 415 120
2012 Estimated using AADF from previous year on this link 42,898 34,159 6,181 2,124 8 283 150
2011 Manual count 42,891 34,407 5,936 2,109 9 291 148
2010 Estimated using AADF from previous year on this link 42,175 33,981 5,637 2,105 6 320 132
2009 Manual count 42,884 34,816 5,495 2,088 6 361 124
2008 Estimated using AADF from previous year on this link 47,199 38,671 5,458 2,593 3 286 191
2007 Estimated using AADF from previous year on this link 47,457 38,944 5,446 2,585 3 294 188
2006 Estimated using AADF from previous year on this link 47,141 39,217 4,916 2,517 3 292 199
2005 Manual count 46,177 38,562 4,690 2,447 3 270 208
2004 Estimated using AADF from previous year on this link 39,672 30,783 5,499 2,839 13 420 131
2003 Estimated using AADF from previous year on this link 38,450 30,268 4,941 2,669 13 413 159
2002 Estimated using AADF from previous year on this link 37,184 29,617 4,463 2,562 16 381 161
2001 Manual count 36,232 28,782 4,427 2,494 15 373 156
2000 Manual count 38,807 33,159 3,079 2,167 4 251 151

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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 99154 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 99154 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. 240

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