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Eye on Wales looks ahead to the opening of a public inquiry into competing proposals to relieve pressure on the M4 around Newport. 

The Welsh Government supports the so-called Black Route, a 15-mile stretch of motorway which would bypass the city at the cost of more than £1 billion. 

In the opposite corner are advocates of alternative proposals – known as the Blue Route. Backers argue it will cost both the taxpayer and the environment less.

Kayley Thomas speaks to supporters of those opposing visions – both black and blue – ahead of what promises to be a bruising encounter.