Network Rail is confident that the £100 upgrade to track and signals in Nottinghamshire will provide huge benefits despite weeks of disruption ahead.
Justin Page, Route Master for the East Midlands, said when finished, the work will mean shorter journey times, more trains and a more reliable service in the county and throughout the region.
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It will be a cloudy start with rain clearing east during the morning.
Feeling cool with outbreaks of rain accompanied by strong winds.
It will be a rather cloudy and damp evening as a band of rain sinks slowly south across the region.