TORONTO - Premier Dalton McGuinty is defending a move to boot mayors and other politicians off the board of a merged Metrolinx.

He says while mayors have provided good ideas so far, they've done as much as they can and it's now time to get the private-sector on board.

While he wouldn't go as far as to say political interests were slowing projects down, McGuinty did say the change will bring projects on more quickly.

He says transit users are impatient for new projects to come online and want those in charge to stop talking about borders.

The government announced plans to merge regional transit agency Metrolinx with GO Transit on Monday -- in a move it says will improve service for millions of commuters.

Outgoing Torstar Corp. chief executive Robert Prichard will be the transition adviser for the deal, while Metrolinx chairman Rob MacIsaac and Go Transit chairman Peter Smith will round off the transition advisory board.