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Road traffic statistics

18498

Details

AADF latest year 2024
Region South West
Local authority South Gloucestershire
Road name M4
Road type Major
Start junction road Junction 18 M4
End junction road LA Boundary
Link length 6.50km (4.04 miles)
Easting & Northing 377107,178227
Latitude & longitude 51.50251,-2.33121

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 78,224 53,311 15,376 9,175 0 113 249
2023 Estimated using AADF from previous year on this link 78,441 53,853 15,060 9,160 0 115 252
2022 Automatic counter 76,715 52,398 14,583 9,374 0 119 240
2021 Manual count 65,671 44,244 12,271 8,854 0 101 200
2020 Automatic counter 62,199 43,144 9,772 8,931 0 154 198
2019 Manual count 81,766 61,392 10,829 8,953 0 255 337
2018 Automatic counter 84,634 62,446 12,035 9,578 0 237 338
2017 Manual count 82,823 61,613 11,413 9,233 0 234 329
2016 Estimated using AADF from previous year on this link 87,247 66,954 11,107 8,314 0 361 511
2015 Manual count 85,992 66,412 10,459 8,244 0 357 521
2014 Estimated using AADF from previous year on this link 70,193 52,594 9,662 7,434 0 214 290
2013 Manual count 68,903 52,142 8,803 7,469 0 216 274
2012 Estimated using AADF from previous year on this link 70,053 53,749 7,727 8,041 0 177 359
2011 Manual count 71,061 54,759 7,537 8,230 0 194 341
2010 Estimated using AADF from previous year on this link 79,457 61,712 8,641 8,021 0 525 558
2009 Estimated using AADF from previous year on this link 80,612 62,843 8,555 8,159 0 562 493
2008 Manual count 81,768 63,414 8,403 8,909 0 582 460
2007 Manual count 85,360 67,622 7,917 9,117 0 354 350
2006 Manual count 78,155 59,666 8,391 9,209 0 304 585
2005 Manual count 78,101 59,753 8,127 9,583 0 299 339
2004 Estimated using AADF from previous year on this link 74,733 57,194 7,453 9,575 0 299 212
2003 Manual count 72,271 55,636 6,763 9,182 0 336 354
2002 Manual count 73,967 57,221 6,752 9,389 0 283 322
2001 Manual count 72,054 55,644 6,492 9,338 0 358 222
2000 Manual count 80,518 63,065 7,159 9,462 0 322 510

Download data

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 18498 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 18498 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. 336

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