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Road traffic statistics

18682

Details

AADF latest year 2024
Region South East
Local authority Slough
Road name A4
Road type Major
Start junction road M4
End junction road A355
Link length 3.20km (1.99 miles)
Easting & Northing 495000,180930
Latitude & longitude 51.51931,-0.63218

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 Manual count 10,507 9,142 949 216 110 94 107
2023 Estimated using AADF from previous year on this link 14,388 12,189 1,726 324 300 84 65
2022 Estimated using AADF from previous year on this link 14,140 11,964 1,697 329 305 85 64
2021 Estimated using AADF from previous year on this link 13,223 11,202 1,565 318 341 78 60
2020 Estimated using AADF from previous year on this link 12,032 10,167 1,436 296 417 74 58
2019 Estimated using AADF from previous year on this link 15,542 13,386 1,627 337 365 100 92
2018 Estimated using AADF from previous year on this link 15,395 13,220 1,641 337 333 106 91
2017 Estimated using AADF from previous year on this link 15,519 13,367 1,611 333 301 108 100
2016 Manual count 15,542 13,466 1,531 331 314 107 107
2015 Estimated using AADF from previous year on this link 18,252 15,224 2,401 372 126 90 165
2014 Estimated using AADF from previous year on this link 17,859 14,928 2,290 386 135 102 153
2013 Estimated using AADF from previous year on this link 17,324 14,534 2,141 383 139 107 159
2012 Estimated using AADF from previous year on this link 17,352 14,664 2,060 380 141 96 152
2011 Estimated using AADF from previous year on this link 17,557 14,896 2,036 385 149 100 140
2010 Estimated using AADF from previous year on this link 17,406 14,941 1,824 375 135 118 148
2009 Estimated using AADF from previous year on this link 17,357 15,031 1,708 363 135 124 131
2008 Manual count 17,030 14,707 1,683 396 135 111 133
2007 Estimated using AADF from previous year on this link 15,444 13,287 1,487 404 62 110 156
2006 Manual count 15,640 13,503 1,413 436 98 116 172
2005 Estimated using AADF from previous year on this link 16,811 14,481 1,631 457 123 107 135
2004 Manual count 17,418 15,180 1,530 434 146 130 144
2003 Estimated using AADF from previous year on this link 16,502 13,923 1,676 577 86 166 160
2002 Manual count 16,878 14,458 1,543 595 96 117 165
2001 Estimated using AADF from previous year on this link 17,584 14,951 1,583 633 90 231 186
2000 Manual count 18,075 15,429 1,572 675 94 221 178

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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 18682 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 18682 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. 168

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