A cycling club is calling for greater enforcement of the minimum passing rule after two members were injured in an incident involving a semi-trailer on Princes Highway, Engadine on Sunday.
Both cyclists suffered broken bones and one remains in hospital in intensive care but in a stable condition, Dulwich Hill Bicycle Club said in a statement
The minimum passing rule was made permanent in 2018 after a successful trial.
"The NSW Government needs to act urgently to ensure greater awareness and enforcement of the legislation," the club said.
"The two riders were part of a group of about 12 on a weekly Sunday club ride to Waterfall.
"These rides have been conducted by the club since the mid-1990s and are supervised by trained and experienced ride leaders, who endeavour to ensure riders in the group adhere to current NSW road rules and regulations.
"At 8.40am on Sunday (April 7), a semi-trailer drove past the peloton at speed.
"The vehicle passed closer than one metre to the group in contravention of the minimum passing distance rule, which stipulates a minimum passing distance of one metre (up to 60km/h) or 1.5 metres (over 60km/h).
"The large vehicle passing this close at speed created a suction force which drew one rider towards the semi-trailer.
"The rider's bicycle was run over by the wheels of the semi-trailer and destroyed.
"The semi-trailer braked momentarily, but did not stop.
"The rider came off his bike and brought down another rider in the process, but fortunately neither rider was run over."
The club said the matter was immediately reported at Sutherland Police Station.
Witnesses had provided written statements with accompanying high-definition video footage of the accident.
"Both riders sustained substantial injuries and broken bones," the statement said.
"One rider is currently in ICU but in a stable condition."