The latest tactic sees cars lying in wait for victims to leave shops, car parks or fuel stations.
Fraudsters flash their headlights, offering the victim a right of way to join a main road, but then speed up to ensure their car is hit.
The new tactic has been spotted, and given its name, by automotive anti-fraud investigation specialist APU, which said the flash-for-crash phenomenon had emerged as a worrying trend since the turn of the year.
"It is yet another example of how criminal gangs are becoming more sophisticated and attempting to stay one step ahead of suspicion," said Neil Thomas, APU's director of investigative services and a former detective inspector with West Midlands Police.
APU said some 380 false insurance claims are made daily, costing the motor industry £1.7 million a year and pushing up insurance premiums.
It added that the Insurance Fraud Bureau is currently investigating 49 rings, responsible for around £66 million in false claims.