Rail commuters on trains between Wollongong and Sydney are ignoring social distancing guidelines - which presents a concern as Transport for NSW increases capacity on public transport.
As of July 1, the maximum number of passengers allowed in a train carriage has almost doubled from 36 up to 68.
A measure to ensure passengers stay a safe distance apart has been the placing of green dots on seats to mark safe places to sit.
"Everyone has done a really great job so far, and this is about continuing to keep all of us safe. We still need customers to leave a space or an empty seat between themselves and others," Transport and Roads Minister Andrew Constance said.
"More green dots have been rolled out to show people the safest places to sit and stand. Remember no green dot, no spot."
However, Nathan Harris who has been travelling from Warilla to his job at Parramatta throughout the COVID-19 situation said some people are not doing a 'great job'
"I've noticed a few more people coming back," Mr Harris said.
"But I've noticed when the trains get to Hurstville and Sutherland, no one cares about the signs that are on the seats. They look for any available seat. It's like the green stickers aren't doing anything and no one's policing the trains."
Mr Harris said marshalls were on those stations looking into the carriages but no-one was taking actions to ensure people only sat on the green dots.
"I always ensure that I'm in green-stickered seat and the seat in front of me is facing me," he said.
"I've flipped it over because no one's meant to sit there. But people will get on and flip that seat over and just sit there."
A Transport for NSW spokeswoman said there was an aspect of "personal responsibility" when it came to siting on the right seats to slow the spread of COVID-19.
"The Marshalling Response and Support Teams are monitoring physical distancing, assisting with crowd management and providing extra guidance to customers to help them move through stations and interchanges and regional hubs safely," the spokeswoman said.
"For the month of June almost 90 per cent of bus, train and metro services show an adherence to physical distancing capacity."
Meanwhile, there have been calls for face masks to be worn on public transport as the restrictions on passenger numbers ease.
Dr Chris Degeling from the University of Wollongong's Australian Centre for Health Engagement Evidence and Values, said masks could be effective - but only if there was a lot of the virus in the community.
"NSW is very fortunate in that we don't seem to have a lot of virus out in the community at the moment but, as Victoria shows, that can change very quickly and we could be faced with a very similar situation within a matter of weeks if people relax and start to go back to previous ways of doing things," Dr Degeling said.
"The more virus is out there, the more likely a mask is going to help in stopping its spread. Dr Norman Swan has been pushing for masks on public transport and other places for quite a while and it does seem like the evidence is mounting that it does have some beneficial effects in limiting spread of these particular viruses."
The Transport for NSW spokeswoman said If customers are unwell, they should not be travelling on the public transport network.
"Transport for NSW is working closely with all industry stakeholders to ensure frontline staff are appropriately equipped and protected," the spokeswoman said.
"In line with NSW Health advice, face masks are not recommended for the general public unless they are unwell and masks should be saved for people to use when they are sick."
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