Two OC Transpo drivers have been attacked this week.
One was punched in the back of his head at South Keys station on Tuesday, while the other was taken to the hospital Wednesday after she was assaulted at Bayshore.
A suspect has been arrested in the second case.
There have been eight assaults on OC Transpo drivers since the start of the year.
There were more than 70 in 2013.
With files from CTV Ottawa