We'll find out later today if SIPTU unions members at Dublin Bus are likely to go on strike.

They've been voting since yesterday to decide if they'll join in with workers from the National Bus and Rail Union who've voted over whelmingly in favour of industrial action in a row over pay.

Drivers say they want to be paid the same as Luas staff who got a wage hike earlier this summer.

It's unclear what form the industrial action may take but union bosses won't rule out the prospect of an all-out strike.

They've also suggested that a 'no fare' day could be on the cards for passengers.