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Road traffic statistics

27953

Details

AADF latest year 2024
Region East of England
Local authority Hertfordshire
Road name A4178
Road type Major
Start junction road A4145
End junction road A411
Link length 0.50km (0.31 miles)
Easting & Northing 510675,196300
Latitude & longitude 51.65461,-0.40151

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 Estimated using AADF from previous year on this link 9,411 7,776 1,354 105 69 93 81
2023 Estimated using AADF from previous year on this link 9,267 7,660 1,330 105 68 91 81
2022 Estimated using AADF from previous year on this link 9,106 7,519 1,308 107 70 92 80
2021 Estimated using AADF from previous year on this link 8,508 7,040 1,207 103 78 84 75
2020 Estimated using AADF from previous year on this link 7,744 6,390 1,107 96 95 79 72
2019 Manual count 9,997 8,412 1,254 109 83 107 114
2018 Estimated using AADF from previous year on this link 11,572 9,528 1,685 163 81 100 95
2017 Estimated using AADF from previous year on this link 11,657 9,635 1,654 162 74 101 105
2016 Estimated using AADF from previous year on this link 11,653 9,706 1,572 162 77 100 112
2015 Estimated using AADF from previous year on this link 11,379 9,557 1,439 159 83 103 121
2014 Estimated using AADF from previous year on this link 11,139 9,371 1,372 166 89 116 113
2013 Estimated using AADF from previous year on this link 10,807 9,124 1,283 162 92 121 117
2012 Estimated using AADF from previous year on this link 10,819 9,205 1,234 158 93 109 112
2011 Manual count 10,943 9,351 1,220 155 98 114 103
2010 Estimated using AADF from previous year on this link 10,513 8,735 1,382 249 105 84 63
2009 Estimated using AADF from previous year on this link 10,464 8,788 1,294 237 105 89 56
2008 Estimated using AADF from previous year on this link 10,267 8,599 1,275 257 105 80 56
2007 Estimated using AADF from previous year on this link 10,447 8,794 1,248 256 94 84 65
2006 Estimated using AADF from previous year on this link 10,556 8,936 1,186 275 151 87 72
2005 Estimated using AADF from previous year on this link 10,742 9,109 1,168 287 96 101 77
2004 Estimated using AADF from previous year on this link 11,114 9,549 1,095 266 114 122 82
2003 Manual count 10,925 9,426 995 218 140 186 100
2002 Estimated using AADF from previous year on this link 12,728 10,767 1,413 264 119 178 106
2001 Estimated using AADF from previous year on this link 12,467 10,597 1,318 275 115 172 105
2000 Estimated using AADF from previous year on this link 12,795 10,937 1,309 285 121 164 100

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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 27953 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 27953 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. 72

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