Drivers voted 95% in favour of strike action as part of an ongoing pay dispute at the company
Trade union leaders are to meet early next week to plan a campaign of industrial action at Dublin Bus.
Yesterday, drivers attached to SIPTU voted overwhelmingly in favour of action over a long-running pay row.
The action could cause chaos for passengers in the coming weeks.
SIPTU has warned that unless a resolution is reached next week with Dublin Bus, their drivers are prepared to stage 24 and 48 hour work stoppages - and even an all-out strike.
However, a spokesperson said they are willing to return to the bargaining table as they want to avoid wide-scale disruption.
Both SIPTU and the National Bus and Railworkers Union have rejected Labour Court proposals for an 8.2% pay rise over three years.
The unions want a wage increase of 18.3%, in line with the increase received by Luas workers earlier this year.
Dublin Bus has urged employees not to take action, and says it is available to engage with trade unions with a view to seeking a way forward.
Dublin South West TD Seán Crowe has called on Dublin Bus to "get real about the conditions that the workers are working under".
With SIPTU and NBRU workers voting overwhelmingly for strike action, Deputy Crowe says the company has to understand that workers have not had a pay increase for eight years while the cost of living has rocketed.