A Scotrail spot check on rail journeys through Eastwood to Glasgow showed a significant number of people were cheating on fares.
Now Scotrail has launched a Buy Before You Board campaign in a bid to persuade people to use ticket machines for their trips,
A spokesman said: “Customer surveys revealed passengers are fed up with long queues at destination stations, with people waiting to but tickets during the morning peak.
“They also highlighted that deliberate fare fraud is frustrating for the vast majority of honest fare-paying customers,”
A recent exercise at Glasgow Central showed that 19 customers declared a shorter journey than the one they had actually travelled during journeys from East Kilbride (through Eastwood) and Barrhead.
ScotRail hopes more customers will be persuaded to buy tickets in advance, after investing in vending machines at 26 new sites and upgrading machines at a further 100 sites.
Phil Campbell, ScotRail’s head of revenue protection, said:
“We provide a service and it’s only fair that everyone pays the correct fare for the service they use. We’ve invested heavily in facilities to make it much easier for our customers to buy tickets in advance.
“This means that staff on trains have more time to help customers with travel or other queries.”
“Buying before boarding will result in much shorter queues to get through the gates at busy destination stations such as Glasgow Central.”