'Exciting' metro transport future - Edwina Hart AM
Up to £600m is to be spent on a new metro for south east Wales within five years, it has been announced.
It is likely to be a mix of light rail, trams, improved trains and faster buses by 2020 in Cardiff and the valleys.
It is in addition to planned rail electrification and will run as a "not-for-dividend" part of the next all-Wales rail franchise from 2018.
The economy minister said it would be "chaos" unless the issue of public transport was not sorted out.
Edwina Hart told BBC Wales economics correspondent Sarah Dickins it was something passengers in south Wales should be excited about.