Police said the accident happened at 1am on the Pattaya-bound Sukhumvit Road in Tambon Nong Plalai in Chon Buri’s Bang Lamung district.
The motorcyclist was identified as Somporn Chansawang, 44.
The impact of the crash broke the motorcycle into two parts.
Police took Chatra Ngiam, 29, a Cambodian worker who drove the pickup, into custody for questioning. He said he had exited a soi and had driven for just 100 metres when the motorcycle crashed into his pickup’s rear.