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<p>As part of the Department’s National Statistics series on Road Traffic, the Department
produces annual estimates of the average daily flow of vehicles on the major roads
near Heathrow airport. The Department does not know the destination of these vehicles.</p><p>The
table below provides a breakdown of vehicle flow estimates on sections of (a) the
M4, (b) the M25 and (c) the A4 close to Heathrow airport for 2016 and 2017 – the latest
years available.</p><p> </p><p>Average Daily Flow Estimates of motor vehicles on the
M4, M25, and A4 near Heathrow Terminals – 2016 and 2017</p><p> </p><table><tbody><tr><td><p>For
terminals 2 & 3</p></td><td><p> </p></td><td colspan="2"><p>Average Daily Flow</p></td></tr><tr><td><p>Road
link by direction</p></td><td><p>Traffic count-point ID</p></td><td><p>2016</p></td><td><p>2017</p></td></tr><tr><td><p>M4
westbound - before junction 4</p></td><td><p>CP 6013</p></td><td><p>73,421</p></td><td><p>70,077</p></td></tr><tr><td><p>M4
eastbound - before junction 4</p></td><td><p>CP 16012</p></td><td><p>72,498</p></td><td><p>74,388</p></td></tr><tr><td><p>M25
southbound - before junction 15</p></td><td><p>CP 7902</p></td><td><p>97,584</p></td><td><p>101,256</p></td></tr><tr><td><p>M25
northbound - before junction 15</p></td><td><p>CP 27923</p></td><td><p>105,827</p></td><td><p>103,287</p></td></tr><tr><td><p>A4
eastbound - before T2&3</p></td><td><p>CP 56114</p></td><td><p>10,451</p></td><td><p>10,406</p></td></tr><tr><td><p>A4
westbound - before T2&3</p></td><td><p>CP 16112</p></td><td><p>6,807</p></td><td><p>7,977</p></td></tr><tr><td><p>For
terminals 4 & 5</p></td><td><p> </p></td><td colspan="2"><p>Average Daily Flow</p></td></tr><tr><td><p>Road
link by direction</p></td><td><p>Traffic count-point ID</p></td><td><p>2016</p></td><td><p>2017</p></td></tr><tr><td><p>M4
westbound - before junction 4b</p></td><td><p>CP 16012</p></td><td><p>74,344</p></td><td><p>79,547</p></td></tr><tr><td><p>M4
eastbound - before junction 4b</p></td><td><p>CP 48582</p></td><td><p>75,076</p></td><td><p>72,544</p></td></tr><tr><td><p>M25
northbound - before junction 14</p></td><td><p>CP 47876</p></td><td><p>104,525</p></td><td><p>97,377</p></td></tr><tr><td><p>M25
southbound - before junction 15</p></td><td><p>CP 27923</p></td><td><p>108,635</p></td><td><p>107,772</p></td></tr></tbody></table><p>
</p><p>Vehicle counts are collected at a sample of locations on (d) the local road
network. These can be accessed via the Department’s interactive map here:</p><p><a
href="https://roadtraffic.dft.gov.uk/manualcountpoints" target="_blank">https://roadtraffic.dft.gov.uk/manualcountpoints</a></p><p>
</p><p>Contextual information can be found on the data.gov.uk website here:</p><p><a
href="https://www.gov.uk/government/collections/road-traffic-statistics" target="_blank">https://www.gov.uk/government/collections/road-traffic-statistics</a></p><p><strong>
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