Network Rail is advising motorists and rail passengers to allow more time for their journeys while it works on upgrading two level crossings in Doncaster next month.
A level crossing closure at Driffield, Yorkshire will affect road users and train services on the Hull-Scarborough line for one week starting from 28 January.
Train services on the Wherry lines in Norfolk will be subject to disruption during weekends this month because of essential engineering work.