Mitchell John Hawksley, 20, represented himself at his hearing in the Launceston Magistrates Court on Thursday.

He had already pleaded guilty to speeding at 160 km/h on the East Tamar Highway in a 100 km/h zone, but disputed evading police when he rode at well in excess of 200 km/h.

Police prosecutor Trudie Lusted called Sergeant Fergus Cameron to give evidence and he said he was on mobile patrol duties in a marked police car on September 22, 2014.

Sergeant Cameron said he was on the East Tamar Highway between Launceston and Mount Direction and clocked a motorcyclist speeding at 140 km/h.

He said he followed the motorbike, intending to intercept it, and it accelerated to 160 km/h.

Sergeant Cameron said he then turned on the police car's flashing lights and after he saw the motorcyclist check his mirrors, the rider again harshly accelerated and reached 200 km/h.

He said the motorcyclist continued to speed and reached 212 km/h before he decided to discontinue the intercept for safety reasons.

Sergeant Cameron said another police car intercepted the motorcyclist in Tompsons Lane, Newnham.

Hawksley gave evidence and said he had been travelling very fast and had seen flashing lights a fair distance behind him but he did not know what they were.

He said he stopped after he rode past the Black Stallion at Rocherlea, because he saw a police car behind him turn its lights on.

Magistrate Michael Brett said he found the evade police charge proven and it was even supported by Hawksley's own evidence.

"I'm not convinced that you have complete insight into the extent of your offending," he told Hawksley.

"I hope you understand the extent of the danger you put yourself and others in."

Mr Brett convicted Hawksley, fined him $1500, disqualified him from driving for five months, docked six demerit points and ordered him to pay the $600 special penalty for the confiscation of his motorcycle.