A Fife businessman has gone on trial accused of driving at 156mph while holding a mobile phone to his ear.
The speed was registered during a police crackdown
The car was caught on camera on a dual carriageway near Kirkcaldy last May during a weekend speeding crackdown.
The town's sheriff court was shown the film frame by frame and operator Alexander Brown identified the driver as Ronald Klos, who denies the charges.
The evidence has centred on the technology used in the speed trap. The trial has been adjourned until 1 June.
The court was told the equipment can register the speed of a car in a third of a second.
Mr Brown said he was using the laser-based technology on the Sunday morning and registered a BMW doing 156mph.
Further examination of the pictures revealed that the driver was holding what appeared to be a mobile phone to his ear.
Under cross-examination Mr Brown admitted that in his statement he had said he could not identify who was driving.
The car was one of 200 caught on camera during the weekend operation by Fife Police.