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Road traffic statistics

Roadside traffic counts of Heavy Goods Vehicles are changing from 2028, your feedback will help us improve this.

81179

Details

AADF latest year 2020
Region South East
Local authority Buckinghamshire
Road name A4146
Road type Major
Start junction road LA Boundary
End junction road LA Boundary
Link length 6.7 miles
Easting & Northing 488763,228065
Latitude & Longitude 51.94402,-0.71004

Location

Streetview shows approximate location only - this panorama may be on a different road to the count point. Current panorama is less than 10 meters from this count point.

Annual Average Daily Flow

Year Count method All motor vehicles Cars & taxis LGVs HGVs Pedal cycles Motorcycles Buses & coaches
2020 Manual count 17,700 13,610 2,640 1,309 0 71 70
2019 Estimated using AADF from previous year on this link 24,111 18,466 4,036 1,424 1 134 50
2018 Estimated using AADF from previous year on this link 24,069 18,426 4,050 1,418 1 125 51
2017 Estimated using AADF from previous year on this link 23,954 18,514 3,867 1,392 1 128 53
2016 Estimated using AADF from previous year on this link 23,734 18,536 3,654 1,357 1 132 55
2015 Estimated using AADF from previous year on this link 23,198 18,309 3,384 1,318 1 131 55
2014 Estimated using AADF from previous year on this link 22,242 17,773 3,044 1,241 1 127 56
2013 Manual count 21,634 17,373 2,836 1,251 1 123 50
2012 Estimated using AADF from previous year on this link 15,090 11,637 2,436 852 2 104 62
2011 Estimated using AADF from previous year on this link 15,070 11,721 2,339 842 2 107 61
2010 Estimated using AADF from previous year on this link 15,097 11,791 2,287 849 2 109 61
2009 Estimated using AADF from previous year on this link 15,333 12,081 2,229 842 2 124 57
2008 Manual count 15,472 12,240 2,158 901 2 118 55

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.

Metadata

The road traffic statistics metadata PDF document provides guidance on the different datasets available to download for DfT traffic estimates.

Downloads

Site details
Manual count point site 81179 details
Annual average daily flow
Number of vehicles that travel past the count point (in both directions) on an average day of the year.
Annual average 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 81179 details 1
Annual average daily flow Number of vehicles that travel past the count point (in both directions) on an average day of the year. 13
Annual average daily flow by direction Number of vehicles that travel past the count point on an average day of the year, by direction of travel. 26
Raw counts Vehicle counts recorded at this count point. 72

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