And her idea may result in the bylaw being reconsidered earlier than expected.
Cr MacTavish raised the issue at a planning and environment committee meeting last week.
She said on Friday the bylaw was not supposed to be reviewed until 2014.
Apart from the issue of discouraging an environmentally friendly form of transport, Cr MacTavish said she wanted Dunedin to be a city that was "friendly to young people".
The bylaw banned skateboards on the footpaths of George and Princes Sts, Moray Pl and lower Stuart St, except on the "carriageway" or road.
She questioned whether that was a safe option.
Committee chairwoman Cr Kate Wilson said the control of skateboarding bylaw, which was "extremely difficult" to enforce, would be circulated to councillors to gauge how much support there was to change it.
Cr Wilson said it seemed "ageist" to ban skateboards, but not mobility scooters, of which there were many more than in the past.
The bylaw was difficult to police, not just because it was difficult to catch offenders, but because pursuing them through the court system was "not an easy process".
She would get the thoughts ofother councillors on whether they wanted an early review of the bylaw, before deciding on how to deal with the issue.