Irish Rail say they will keep train windows open during the winter to reduce the spread of Covid-19.
Irish Rail says it will not be a regulation, but the windows will be left open on around a quarter of the trains to create more ventilation.
Commuters are calling on Irish Rail to enforce basic public health guidelines before introducing extra measures.
It comes as passengers have been advised to wrap up warm as windows will be staying open on trains throughout the winter.
The move will affect around a quarter of trains in a bid to create more ventilation to reduce the spread of Covid-19.