The driver of the white Ford pickup, Peerarot Jinowat, a PEA staffer, has been arrested and was being questioned at Phuket City Police Station.
The crash about 9.30am left two women dead. They were named as sisters Warankana Angsakul, 51, a teacher at Tessaban Muang Phuket school, and Manta Angsakul.
One of the women was killed at the scene and the other died soon after, in Vachira Phuket Hospital.
Kusoldharm Foundation paramedics at the crash scene in Kuku Road, Phuket City, opposite the Kuku School, found the basket from the motorcycle stuck into the front of the pickup.
The women were five metres from the pickup and the motorcycle they were riding, a Honda Click, was another five metres away.
Witnesses said the pickup crashed into the motorcycle while attempting to overtake.
Their bodies are both at Vachira Phuket Hospital.
Phuket Public Health, which once released monthly updates on Phuket's road toll fatalities and injuries, no longer release statistics about crashes on Phuket.
Figures were last made available in April, 2012.