A young driver who died on the A11 at Mildenhall had high levels of cannabis in his system an inquest has been told.
Motorists and police were unable to save Sam Brooks-Kouam, 23, after his BMW car burst into flames following the crash last May at road works.
The inquest heard that Mr Brooks-Kouam, of Prince of Wales Road, Norwich, failed to heed temporary 40mph warnings and his car had braked hard before going into a spin and into the path of an oncoming Toyota in the opposite carriageway driven by Christopher Turner. Drivers dragged Mr Turner to safety but were beaten back by flames from the BMW.
Toxicology tests showed a level of cannabis in his blood more than seven times higher than that normally associated with impaired behaviour. A post mortem examination showed death was due to traumatic injuries and cannabis use.
The inquest in Bury St Edmunds on Tuesday heard that a police investigation concluded that despite numerous warning signs about road works Mr Brooks-Kouam appeared to have continued driving as if road conditions were normal.
Accident investigator Pc Jason Lambourne said in a report that cannabis appeared to provide the most likely explanation for Mr Brooks-Kouam failing to react properly to the situation. The Toyota was believed to have been travelling well within the 40mph limit but the BMW appeared to have been driven at high speed.
Assistant Suffolk Coroner Yvonne Blake. recorded that Mr Brooks-Kouam died as a result of multiple injuries sustained in a road accident.