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Accident cluster sites and fatal road accidents on the Welsh Trans-European Network - Transport

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  • Release date: 18 May 2017
  • Period covered: 2013-2015
  • Next update: April 2018
A report which informs road users of locations with high accident concentrations.

This report sets out the background to a series of tables which cover the period 2013 to 2015 inclusive and detail Cluster Sites based upon road accidents reported to the police and recorded on Stats19 returns. The criterion used to identify a potential Cluster Site is that there were at least 4 personal injury accidents (or collisions) in a 3-year period within a 100m diameter.

Key points

  • There were 50 accident cluster sites recorded, there were 204 Personal Injury Collisions and 19 of these were classed as Killed or Seriously Injured (KSI) on the Welsh TEN-T road network.
  • In North Wales there were 5 accident cluster sites. There were two on both the A55 and the A494 Ewloe to Deeside Park and one on the A483 from Chirk to the Border. In total there were 25 unique accidents with a personal injury and 1 of these were classed as KSI.
  • In South Wales there were 45 accident cluster sites, 179 unique accidents with a personal Injury and 18 of these were classed as KSI. On the M4, there were 18 accident clusters and over half of these occurred at Motorway Junctions. There were 8 accident clusters sites on the A465 and a further 8 identified on the A48 between Pont Abraham and Carmarthen.


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