Planned overnight closure of the A30 westbound, from Daisymount interchange to the junction of the A30/C832 near M5 Junction 29, will take place tonight and tomorrow night.
Closures on that stretch, from 8pm to 6am each night, are to enable overhead gantry signs to be replaced over the westbound A30. Work was postponed earlier this week due to adverse weather.
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Pupils at Hayle Community School launched the pasty as part of a project they are undertaking.
After a dry end to the day, it will grow colder overnight with a light breeze.
It will turn chilly tonight with largely clear skies and light winds.