I dont know about dangerous but my picks do require a little more vigilance.
Freeway overpass at Hutton st..clowns changing lanes in the turn, then is standard nonsense down to W.A.'s old shop
Walcott and Beaufort. Every yuppie for themselves
Mirrabooka and Reid. I don't know why but there is always evidence of carnage
Right turn exit off Kwinana to Canning...make up you minds ppl, are you going into the Raffles or not?
Leach from Northlake to the Freeway anytime after 3pm on a Friday...Indy 500 without the skillz.
And any place I ride my Triumph