Officers say that by driving at double the speed, motorists would need more than triple the stopping distance, which could make it difficult to stop in time to prevent a crash.
Sergeant Eoin Maxwell, of the roads policing unit, said: “Road policing officers continue to patrol the north-east road network, influencing driver behaviour through education and enforcement when necessary.
“Speeding continues to be a contributing factor in a significant number of serious and fatal road traffic collisions.
“The Highway Code states the stopping distance of a car travelling at 70mph is 96 metres (314ft).
“A driver travelling at 139mph would require an estimated 294 metres (964ft) to stop – the length of about two football pitches further than a motorist travelling at the speed limit for this stretch of road.”