Skip to main content
Road traffic statistics

38536

Details

AADF latest year 2020
Region East of England
Local authority Hertfordshire
Road name A4147
Road type Major
Start junction road B487
End junction road A414
Link length 2.50km (1.55 miles)
Easting & Northing 507865,208000
Latitude & longitude 51.76031,-0.4385

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
2020 Estimated using AADF from previous year on this link 17,066 12,802 3,120 996 113 93 56
2019 Estimated using AADF from previous year on this link 21,737 16,855 3,535 1,134 99 126 88
2018 Manual count 21,568 16,646 3,566 1,135 90 134 87
2017 Estimated using AADF from previous year on this link 19,539 14,461 4,127 744 68 159 47
2016 Estimated using AADF from previous year on this link 19,438 14,569 3,921 740 71 157 51
2015 Estimated using AADF from previous year on this link 18,883 14,345 3,589 733 76 161 55
2014 Estimated using AADF from previous year on this link 18,480 14,066 3,423 758 82 182 51
2013 Estimated using AADF from previous year on this link 17,898 13,695 3,201 759 84 191 53
2012 Manual count 17,876 13,817 3,080 759 85 171 50
2011 Estimated using AADF from previous year on this link 19,537 15,217 3,177 922 109 161 60
2010 Estimated using AADF from previous year on this link 19,266 15,263 2,846 903 99 191 63
2009 Estimated using AADF from previous year on this link 19,148 15,355 2,664 874 99 200 55
2008 Manual count 18,833 15,025 2,625 949 99 179 55
2007 Manual count 18,729 14,723 2,800 1,005 52 131 70
2006 Manual count 19,906 16,145 2,490 1,014 62 162 95
2005 Manual count 18,808 15,350 2,021 1,218 47 153 66
2004 Manual count 20,426 16,773 2,210 1,173 57 186 84
2003 Manual count 21,569 18,026 2,057 1,241 92 172 73
2002 Estimated using AADF from previous year on this link 26,696 22,330 2,916 1,095 107 204 151
2001 Manual count 26,761 22,375 2,910 1,126 103 202 148
2000 Estimated using AADF from previous year on this link 21,510 17,880 2,401 989 50 177 63

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 38536 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 38536 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. 21
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. 42
Raw counts Vehicle counts recorded at this count point. 216

To apply more filters to downloads, or retrieve data split into pages you can use our API.