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Road traffic statistics

78321

Details

AADF latest year 2018
Region East of England
Local authority Hertfordshire
Road name A1057
Road type Major
Start junction road A1081/A4147
End junction road Lyon Way
Link length 4.30km (2.67 miles)
Easting & Northing 516000,207260
Latitude & longitude 51.75204,-0.32092

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 9,699 8,354 898 104 253 76 267
2017 Manual count 9,803 8,447 881 103 229 77 295
2016 Estimated using AADF from previous year on this link 12,893 10,597 1,579 167 226 80 470
2015 Estimated using AADF from previous year on this link 12,631 10,434 1,446 163 243 82 507
2014 Estimated using AADF from previous year on this link 12,343 10,231 1,379 170 261 93 471
2013 Estimated using AADF from previous year on this link 12,001 9,961 1,289 165 269 97 489
2012 Estimated using AADF from previous year on this link 12,006 10,050 1,241 161 272 87 468
2011 Estimated using AADF from previous year on this link 12,114 10,209 1,226 158 288 91 430
2010 Estimated using AADF from previous year on this link 12,055 10,240 1,098 154 261 108 455
2009 Estimated using AADF from previous year on this link 11,994 10,302 1,028 149 259 113 402
2008 Manual count 11,760 10,080 1,012 160 259 102 406
2007 Manual count 11,615 9,871 1,072 215 232 108 349
2006 Manual count 11,633 9,790 1,023 191 207 130 499
2005 Manual count 11,817 10,081 1,030 177 158 111 418
2004 Manual count 10,094 8,479 913 210 224 133 359
2003 Manual count 11,764 10,006 964 221 305 124 449
2002 Manual count 13,820 11,922 1,099 299 170 89 411
2001 Estimated using AADF from previous year on this link 13,568 11,734 1,025 315 164 86 408
2000 Estimated using AADF from previous year on this link 13,928 12,109 1,018 329 171 82 390

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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 78321 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 78321 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. 192

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