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Road traffic statistics

99435

Details

AADF latest year 2018
Region East of England
Local authority Hertfordshire
Road name A4008
Road type Major
Start junction road A411
End junction road A41/M1 roundabout
Link length 2.50km (1.55 miles)
Easting & Northing 511800,197000
Latitude & longitude 51.66068,-0.38503

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
2018 Estimated using AADF from previous year on this link 49,539 41,104 6,852 1,022 3 455 108
2017 Manual count 49,425 41,300 6,543 1,003 3 465 113
2016 Estimated using AADF from previous year on this link 49,235 40,525 6,878 1,176 4 494 162
2015 Manual count 48,185 40,028 6,369 1,130 4 493 164
2014 Manual count 48,932 41,665 5,853 848 0 398 168
2013 Manual count 46,128 39,543 5,316 900 1 247 121
2012 Manual count 47,836 40,591 5,767 823 0 513 141
2011 Manual count 43,921 36,746 5,731 978 3 351 115
2010 Manual count 40,097 33,830 4,798 1,042 0 305 122
2009 Manual count 44,573 38,156 4,986 941 1 365 125
2008 Manual count 43,835 37,216 5,037 1,080 2 356 146
2007 Estimated using AADF from previous year on this link 43,801 36,787 5,372 1,002 5 517 123
2006 Manual count 43,531 37,046 4,848 992 5 514 131
2005 Estimated using AADF from previous year on this link 50,269 43,055 5,176 1,320 4 607 111
2004 Manual count 50,378 43,358 4,948 1,324 4 632 116
2003 Estimated using AADF from previous year on this link 42,552 35,703 4,639 1,436 7 645 129
2002 Manual count 41,228 34,935 4,190 1,378 8 594 131
2001 Manual count 38,436 32,532 4,300 967 6 440 197
2000 Manual count 38,567 32,487 4,099 1,087 4 735 159

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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 99435 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 99435 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. 19
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. 38
Raw counts Vehicle counts recorded at this count point. 336

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