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Road traffic statistics

99169

Details

AADF latest year 2024
Region Wales
Local authority Monmouthshire
Road name M4
Road type Major
Start junction road 23
End junction road LA Boundary
Link length 8.10km (5.03 miles)
Easting & Northing 346258,187169
Latitude & longitude 51.58081,-2.77699

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 Automatic counter 72,426 50,408 12,563 9,121 0 210 124
2023 Estimated using AADF from previous year on this link 77,293 54,171 13,092 9,670 0 228 133
2022 Automatic counter 75,616 52,707 12,677 9,870 0 235 127
2021 Automatic counter 64,181 44,090 10,567 9,222 0 198 105
2020 Automatic counter 54,345 37,206 8,716 8,134 0 186 101
2019 Manual count 77,629 57,631 10,521 8,952 0 338 188
2018 Estimated using AADF from previous year on this link 67,447 49,618 9,230 8,029 0 390 179
2017 Manual count 67,488 50,045 8,947 7,925 0 393 179
2016 Manual count 62,726 47,468 7,868 6,734 0 466 190
2015 Estimated using AADF from previous year on this link 70,490 53,901 8,256 7,492 0 560 281
2014 Manual count 68,884 52,778 7,872 7,376 0 570 287
2013 Estimated using AADF from previous year on this link 60,613 45,299 7,272 7,423 0 443 176
2012 Manual count 60,721 45,796 6,884 7,423 0 434 184
2011 Manual count 64,698 49,711 6,647 7,349 0 578 413
2010 Manual count 62,036 46,632 7,366 7,260 0 448 330
2009 Manual count 66,805 51,644 6,904 7,375 0 453 429
2008 Manual count 66,466 50,335 6,982 8,484 0 401 264
2007 Manual count 65,577 50,540 6,977 7,297 0 463 300
2006 Estimated using AADF from previous year on this link 59,472 44,856 6,078 7,931 0 454 153
2005 Manual count 59,384 45,082 5,750 8,032 0 356 164
2004 Manual count 56,745 42,669 6,168 7,372 0 294 242
2003 Manual count 49,748 37,752 4,720 6,766 0 344 166
2002 Manual count 55,607 42,713 5,341 6,960 0 272 321
2001 Manual count 50,050 38,476 4,436 6,560 0 369 209
2000 Manual count 51,217 39,183 5,000 6,492 0 298 244

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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 99169 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 99169 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. 384

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