Fresh calls are being made to reverse the ban on alcohol on ScotRail services as new data reveals there hasn't been a single prosecution for the offence in three years.
The RMT Union has called for the issue to be "managed better", while a ScotRail survey found most passengers were in favour of reversing the ban.
The law came into place in November 2020 for the "foreseeable future" to limit the spread of Covid, and has remained in place since.
However, figures obtained by the Scottish Mail on Sunday revealed that of the 388 alcohol-related offences on trains in the last three years, none of them relate to the specific crime code previously identified by the British Transport Police (BTP) as breaches of the byelaw in question.
The BTP notes that breaches of the byelaw, which bans having "intoxicating liqour" on board a ScotRail service, may not be recorded if the "action forms part of a more serious offence".
Data from ScotRail shows 56% of passengers want the ban scrapped, with less than a third (29%) in favour of keeping it.
Mick Hogg, the RMT Union's organiser, said: "The ban on alcohol is not working.
"The reality is ScotRail do not have the resources to manage the situation as things stand.
"Instead, what we see if the responsible majority being denied the opportunity to have a drink on a train and, in fact, being dictated to by a small minority who are causing havoc on Scotland's trains and are doing it anyway, regardless of the ban."
He continued: "The issue of anti-social abuse on trains in Scotland is through the roof and the onus is being placed on rail staff to step in to act in an area which is the responsibility of their employer via Transport Police. We would support the position that the ban is lifted and the issue is managed better."
A Transport Scotland spokesman said: "It is clear a wide range of opinions are held by passengers, staff and other interested parties.
"Ministers will take time to carefully consider diverging views, in line with the broad range of recommendations made in our report on women and girls' safety on public transport, before making any final decision."