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Road traffic statistics

18136

Details

AADF latest year 2010
Region East of England
Local authority Central Bedfordshire
Road name A421
Road type Major
Start junction road LA Boundary
End junction road M1
Link length 3.00km (1.86 miles)
Easting & Northing 495000,237672
Latitude & longitude 52.02934,-0.61667

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 Estimated using AADF from previous year on this link 17,629 12,734 2,372 2,381 0 73 69
2009 Estimated using AADF from previous year on this link 17,843 13,047 2,312 2,336 0 83 65
2008 Estimated using AADF from previous year on this link 18,108 13,219 2,238 2,510 0 79 62
2007 Manual count 18,216 13,312 2,233 2,529 0 81 61
2006 Estimated using AADF from previous year on this link 19,295 14,352 2,285 2,475 1 138 45
2005 Manual count 18,971 14,111 2,181 2,506 1 127 46
2004 Estimated using AADF from previous year on this link 18,479 13,527 2,242 2,494 0 165 51
2003 Manual count 17,995 13,301 2,014 2,457 0 162 61
2002 Estimated using AADF from previous year on this link 24,435 19,237 2,942 1,974 0 193 89
2001 Manual count 23,814 18,694 2,918 1,927 0 189 86
2000 Estimated using AADF from previous year on this link 17,961 13,811 1,720 2,255 0 114 61

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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 18136 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 18136 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. 96

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