Subiaco Council endorsed the proposed roundabout, plus other works, for the Station and Hood streets intersection at a committee meeting last week.
A 2013 study identified the intersection as one of the most dangerous in Subiaco, with at least 18 car crashes recorded in five years.
Cr Lynley Hewett said the intersection was an ‘appalling bit of roadwork’ considering the amount of traffic around the markets and Woolworths car park.
‘If it has Black Spot funding, then we are obliged to do something right now,’ she said.
Cr Mark Burns said there were often 15 or more cars waiting up to 40 minutes on Hood Street to enter the markets car park.
Cr Lee Hemsley said the City needed to do more research as there were ‘major legal and planning problems’ with the roundabout.
Cr Hemsley said the proposed Coles-Target development application at the Station Street Market site complicated the City’s plans.
‘If this development is not built, then we will have a tiny half-metre footpath on the corner,’ he said.
‘Going ahead with approval and committing funds to the project before a decision is made on the markets development is a bit premature.’
The Metropolitan Redevelopment Authority will determine the market site development in July.