A1, , Hertfordshire

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Traffic Region: East of England

Traffic Authority: Hertfordshire

Road Number: A1

Road Type: M or Class A Trunk Motorway

OS Grid: TL224120

Location: Welwyn Garden City

Census Point ID: 56070

Census Point Coverage: A1 between J4 and J5

Related Locations

All census points on the A1

All census points in Hertfordshire

More census points near TL224120

Traffic by Year

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Traffic statistics by year: All traffic

200020012002200320042005200620072008200920102011201220132014201520162017
Pedal Cycles000000000000000000
Motorcycles and Mopeds674578655561493608707720694533504551526494528491498329
Cars61,93358,86559,74861,54761,11662,99763,18667,73067,18754,89553,74359,36258,51462,03162,33561,87262,37866,414
Buses and Coaches352306321283155315300178213237255201216184187106104138
Light Goods Vehicles8,8508,4348,8228,9369,2228,9409,60210,73511,4879,73610,07710,62511,46510,05311,00511,96712,70911,601
Two-axle Rigid HGVs2,0242,1992,2792,7442,9652,5482,6372,9452,9341,4471,5311,9211,9391,4031,3401,3421,4111,337
Three-axle Rigid HGVs189230258240274240242305342230232246268183190252246220
Four-axle Rigid HGVs166253283211249344376302320363316323368225230400466358
Three-axle Articulated HGVs623513482494496379340501458315357311249186187191196224
Five-axle Articulated HGVs1,2621,3161,1851,5271,4251,3311,1751,2041,1071,1941,0961,0051,0294484157316921,474
Six-axle Articulated HGVs8456677579631,1155796191,2901,3186946781,0421,1421,7151,8381,4181,474719
All HGVs5,1095,1785,2446,1796,5245,4215,3896,5476,4794,2434,2104,8484,9944,1604,2004,3344,4864,332
All motor vehicles76,91873,36174,79077,50677,51078,28179,18485,91086,06069,64468,78975,58775,71576,92278,25578,77180,17482,815

Traffic statistics by year: Northbound

200020012002200320042005200620072008200920102011201220132014201520162017
Pedal Cycles000000000000000000
Motorcycles and Mopeds360249282230202312363351338277262249238272291275272161
Cars30,82627,50727,92028,73428,53329,71429,80333,15932,89327,72927,14726,88626,50229,98330,13031,04331,27230,850
Buses and Coaches228164172163891141089211014015182888284515163
Light Goods Vehicles4,9804,6834,8984,3974,5385,2265,6135,5245,9115,3985,5875,5626,0025,0045,4776,6877,0296,285
Two-axle Rigid HGVs1,1461,0981,1381,4641,5821,0861,1241,5591,5538148611,1521,163714682742768671
Three-axle Rigid HGVs109121136120137104105154173108109109119113117134130121
Four-axle Rigid HGVs84108121101119154168148157190165154175109111187204147
Three-axle Articulated HGVs36630028223523625522927625217920312298878810789107
Five-axle Articulated HGVs714673606881822652575657604697640615629235218354331747
Six-axle Articulated HGVs4352813194234903473716486623293214034429801,051754786381
All HGVs2,8542,5812,6023,2243,3862,5982,5723,4423,4012,3172,2992,5552,6262,2382,2662,2792,3082,175
All motor vehicles39,24835,18435,87436,74836,74837,96438,45942,56842,65335,86135,44635,33435,45537,57938,24840,33440,93139,534

Traffic statistics by year: Southbound

200020012002200320042005200620072008200920102011201220132014201520162017
Pedal Cycles000000000000000000
Motorcycles and Mopeds314329373331291296344369356256242302288221236217214168
Cars31,10731,35831,82832,81332,58333,28333,38334,57134,29427,16626,59632,47632,01232,04832,20530,82931,05635,563
Buses and Coaches124142149120662011928610397104119128102104555675
Light Goods Vehicles3,8703,7513,9244,5394,6843,7143,9895,2115,5764,3384,4905,0635,4635,0505,5285,2805,5505,316
Two-axle Rigid HGVs8781,1011,1411,2801,3831,4621,5131,3861,381633670769776689658599620667
Three-axle Rigid HGVs80109122120137136137151169122123137149707311811499
Four-axle Rigid HGVs82145162110130190208154163173151169192116119213231211
Three-axle Articulated HGVs257213200259260124111225206136154189151991008471117
Five-axle Articulated HGVs548643579646603679600547503497456390399213198377352726
Six-axle Articulated HGVs410386438540625232248642656365357639700735788664693338
All HGVs2,2552,5972,6422,9553,1382,8232,8173,1053,0781,9261,9112,2932,3681,9221,9342,0552,0802,157
All motor vehicles37,67038,17738,91640,75840,76240,31740,72543,34243,40733,78333,34340,25340,26039,34340,00738,43738,95743,280

Notes

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.

All public sector data is licensed under the Open Government Licence v2.0.

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