Traffic Region: East of England
Traffic Authority: Hertfordshire
Road Number: A4251
Road Type: Class A Principal road in Rural area
OS Grid: TL075017
Location: Kings Langley
Census Point ID: 78354
Census Point Coverage: A4251 between Home Park Mill Link Rd, Kings Langley and M25 Jn20
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| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pedal Cycles | 23 | 22 | 23 | 91 | 73 | 62 | 98 | 26 | 29 | 29 | 29 | 32 | 31 | 30 | 29 | 27 | 61 | 58 |
| Motorcycles and Mopeds | 67 | 70 | 72 | 165 | 108 | 89 | 77 | 74 | 71 | 79 | 75 | 63 | 61 | 68 | 65 | 57 | 99 | 100 |
| Cars | 11,966 | 11,595 | 11,780 | 10,671 | 10,810 | 10,313 | 10,117 | 11,696 | 11,439 | 11,691 | 11,622 | 11,586 | 11,406 | 11,305 | 11,612 | 11,842 | 12,464 | 12,372 |
| Buses and Coaches | 119 | 125 | 125 | 116 | 95 | 89 | 83 | 91 | 79 | 79 | 90 | 85 | 92 | 96 | 93 | 100 | 78 | 73 |
| Light Goods Vehicles | 1,292 | 1,301 | 1,395 | 1,504 | 1,656 | 1,765 | 1,792 | 1,704 | 1,740 | 1,766 | 1,887 | 2,106 | 2,130 | 2,214 | 2,367 | 2,482 | 1,778 | 1,872 |
| Two-axle Rigid HGVs | 348 | 332 | 313 | 388 | 472 | 511 | 493 | 181 | 181 | 165 | 175 | 178 | 179 | 180 | 185 | 175 | 133 | 132 |
| Three-axle Rigid HGVs | 20 | 22 | 22 | 20 | 26 | 28 | 26 | 20 | 23 | 22 | 23 | 24 | 26 | 29 | 32 | 33 | 16 | 16 |
| Four-axle Rigid HGVs | 38 | 37 | 37 | 34 | 45 | 52 | 53 | 38 | 40 | 38 | 34 | 39 | 45 | 51 | 56 | 53 | 21 | 22 |
| Three-axle Articulated HGVs | 21 | 17 | 15 | 17 | 17 | 14 | 11 | 15 | 13 | 12 | 14 | 11 | 8 | 6 | 6 | 7 | 9 | 9 |
| Five-axle Articulated HGVs | 36 | 28 | 24 | 35 | 33 | 26 | 21 | 18 | 16 | 13 | 12 | 14 | 12 | 11 | 9 | 9 | 9 | 9 |
| Six-axle Articulated HGVs | 15 | 15 | 16 | 21 | 24 | 24 | 23 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 7 | 7 |
| All HGVs | 478 | 451 | 427 | 515 | 617 | 655 | 627 | 275 | 276 | 253 | 261 | 269 | 273 | 280 | 290 | 279 | 195 | 196 |
| All motor vehicles | 13,922 | 13,542 | 13,799 | 12,971 | 13,286 | 12,911 | 12,696 | 13,840 | 13,605 | 13,868 | 13,935 | 14,109 | 13,962 | 13,963 | 14,426 | 14,760 | 14,615 | 14,613 |
Figures are daily averages calculated from all traffic counts over the course of the year.
Values are rounded to the nearest whole number.
A value of zero for any entry means that there were either no recorded vehicles of that type or too few to register after rounding.
A blank value means that there were no counts made in that year.
Click or tap on the column headings to see a pie chart of the data.