A road closure to stop "severe" rat running in Mt Hawthorn has been removed after motorists switched to other nearby streets.
The City of Vincent closed half of Merredin Street last year to stop motorists on Green Street using it as a shortcut to bypass the busy Scarborough Beach Road intersection.
The closure reduced traffic on Merredin Street but led to increased traffic on neighbouring streets and new rat runs.
According to Vincent council statistics, traffic on Merredin Street - with just five houses - went from 1872 vehicles a day to 469 vehicles after the closure.
But in nearby Matlock Street traffic increased by almost 400 vehicles a day over the same time and on Bondi Street from 283 vehicles a day to 420.
Last week, the council voted to reopen Merredin Street after residents of Bondi Street lodged a petition.
Bondi Street resident Carmel Agnello said most people living on her street were against the closure from the outset. "The trial confirmed our fears," she said.
"Although we are sympathetic to the residents who were affected by the 'rat run' on Merredin, it was difficult to understand why just these few residents affected, and only during peak morning traffic, had caused the council to trial a closure that would affect so many more.
"We are pleased the council has listened, done proper investigation and rectified the situation."
Acting Vincent mayor John Carey said the council would now do a traffic study and look at a funding model to upgrade the intersection at Green Street and Scarborough Beach Road.
Mr Carey said the upgrade could cost millions and would involve buying surrounding land.
"As it is a main intersection and a large project, we would expect the State and Commonwealth governments to come to the table with funding," he said."The intersection also runs through two council areas, so we will be working with the City of Stirling to secure funding."