He was on his way to a meeting in Pembrokeshire when he noticed the woman dangerously close to traffic.
Coleman is said to have driven around Haverfordwest for half an hour to see if the woman could recognise her home, before calling friends in the town to ask for help.
More top news
New captain Alun Wyn Jones in England icons Martin Johnson and Lawrence Dallaglio's class, says coach Sean Edwards.
A grandfather from Barry will be the first person in the UK to have surgery on live TV when his colonoscopy is broadcast later.
A rather mild, generally dry but cloudy for many of us. The odd spot of light rain or drizzle is possible, mainly over the hills.