The parking enforcement and traffic situation is indeed atrocious between the underpass exit on Perry Vale and the junction of Waldram Park Road.
Double parking, parking on double yellows, and parking on kerbs is a real problem.
It's well documented that this is an area where parking and road use laws are disregard with alarming frequency. I cannot speculate that these issues have contributed to the cited accidents, but thorough investigation is required. Should illegal road use be cited as a contributing factor then enforcement must be escalated.