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Road traffic statistics

99434

Details

AADF latest year 2010
Region East of England
Local authority Hertfordshire
Road name A411
Road type Major
Start junction road A4008
End junction road A4008
Link length 1.30km (0.81 miles)
Easting & Northing 511750,196330
Latitude & longitude 51.65467,-0.38596

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
2010 Manual count 30,508 26,055 3,704 411 0 218 120
2009 Manual count 44,277 39,563 3,815 468 10 320 111
2008 Estimated using AADF from previous year on this link 42,058 36,488 4,739 464 2 282 85
2007 Estimated using AADF from previous year on this link 42,586 37,194 4,526 480 2 302 84
2006 Manual count 44,053 39,029 4,148 489 2 299 88
2005 Estimated using AADF from previous year on this link 40,835 36,002 3,515 792 7 448 78
2004 Manual count 41,697 36,925 3,426 825 9 443 78
2003 Estimated using AADF from previous year on this link 32,965 28,297 3,393 840 3 363 72
2002 Manual count 32,998 28,699 3,113 782 3 323 81
2001 Estimated using AADF from previous year on this link 33,282 29,320 2,973 536 11 383 70
2000 Manual count 32,716 28,745 2,985 548 11 370 68

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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 99434 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 99434 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. 11
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. 22
Raw counts Vehicle counts recorded at this count point. 144

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