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Road traffic statistics

50612

Details

AADF latest year 2024
Region Wales
Local authority Cardiff
Road name M4
Road type Major
Start junction road 33
End junction road 32
Link length 5.50km (3.42 miles)
Easting & Northing 310179,180004
Latitude & longitude 51.5118,-3.29574

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 112,197 83,049 21,079 7,485 0 431 153
2023 Estimated using AADF from previous year on this link 101,799 74,861 19,262 7,227 0 234 215
2022 Manual count 99,296 72,838 18,652 7,359 0 241 206
2021 Estimated using AADF from previous year on this link 89,428 63,346 17,812 8,003 0 193 73
2020 Manual count 78,200 55,411 15,239 7,288 0 190 73
2019 Estimated using AADF from previous year on this link 102,312 79,069 15,512 7,126 0 331 273
2018 Manual count 101,101 77,875 15,524 7,087 0 342 273
2017 Estimated using AADF from previous year on this link 105,240 79,725 16,630 8,347 0 315 223
2016 Manual count 103,714 79,811 15,338 7,997 0 340 228
2015 Manual count 104,851 81,397 15,146 7,749 0 230 328
2014 Manual count 99,756 79,331 12,669 7,153 0 437 166
2013 Manual count 89,714 69,218 12,202 7,951 0 187 157
2012 Manual count 88,826 71,002 10,571 6,869 0 263 121
2011 Manual count 89,822 72,723 9,710 6,878 0 230 281
2010 Manual count 93,820 74,361 10,515 8,303 0 289 352
2009 Manual count 89,426 72,607 8,576 7,628 0 382 233
2008 Manual count 102,041 87,130 7,033 7,303 0 307 268
2007 Manual count 94,435 81,209 4,736 7,990 0 307 193
2006 Manual count 94,444 78,252 9,123 6,526 0 315 228
2005 Manual count 87,549 68,927 9,901 8,119 0 290 312
2004 Manual count 98,195 78,842 10,365 8,338 0 351 299
2003 Manual count 99,950 79,584 10,097 9,447 0 357 465
2002 Manual count 83,553 66,628 8,564 7,675 0 334 352
2001 Manual count 89,707 71,040 9,061 8,852 0 290 464
2000 Manual count 78,999 60,927 9,062 8,386 0 311 313

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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 50612 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 50612 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. 504

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