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Road traffic statistics

46463

Details

AADF latest year 2018
Region East of England
Local authority Hertfordshire
Road name A4251
Road type Major
Start junction road A41 / B4635
End junction road Boswick Lane, Berkhamstead
Link length 4.30km (2.67 miles)
Easting & Northing 496100,210000
Latitude & longitude 51.78043,-0.60835

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 8,784 7,204 1,354 126 33 47 53
2017 Estimated using AADF from previous year on this link 8,759 7,238 1,293 124 34 49 56
2016 Estimated using AADF from previous year on this link 8,696 7,247 1,221 120 34 50 57
2015 Estimated using AADF from previous year on this link 8,513 7,158 1,131 116 34 50 58
2014 Estimated using AADF from previous year on this link 8,523 7,244 1,057 114 34 52 57
2013 Estimated using AADF from previous year on this link 8,344 7,144 983 112 43 51 55
2012 Manual count 8,414 7,278 916 110 43 50 60
2011 Estimated using AADF from previous year on this link 8,397 6,605 1,378 247 27 57 110
2010 Estimated using AADF from previous year on this link 8,290 6,585 1,303 243 31 53 106
2009 Estimated using AADF from previous year on this link 8,377 6,712 1,266 238 31 59 102
2008 Estimated using AADF from previous year on this link 8,458 6,794 1,243 262 27 57 102
2007 Estimated using AADF from previous year on this link 8,724 7,056 1,243 276 27 58 91
2006 Estimated using AADF from previous year on this link 8,768 7,244 1,127 254 27 58 85
2005 Estimated using AADF from previous year on this link 8,533 7,046 1,075 253 29 68 91
2004 Manual count 8,504 7,054 1,024 262 27 74 90
2003 Estimated using AADF from previous year on this link 9,092 7,584 1,118 147 22 138 105
2002 Estimated using AADF from previous year on this link 8,869 7,516 992 148 26 112 101
2001 Manual count 8,699 7,427 920 143 24 114 95
2000 Estimated using AADF from previous year on this link 7,932 6,768 795 162 40 122 85

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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 46463 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 46463 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. 72

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