SAMMY Oscuro will spend 866 hours over the next 10 years sitting at the intersection of Old Windsor Road and Celebration Drive.
Mr Oscuro says he spends between 15 and 20 minutes each day waiting at the traffic lights before he can turn right from Old Windsor Road into Norwest Business Park, where he works.
It's the equivalent of six and a half hours a month, almost four full days a year, and more than five weeks of his time between now and the North-West Rail Link's 10-year completion date.
Mr Oscuro says he constantly wonders why there are only three main entry and exit points into the park from Old Windsor Road, given the rising number of people working in the area, and increasing congestion.
He can't afford to wait a decade for a solution to the gridlock.
Sydney Hills Business Chamber chairman Tony Eades says the business park is a disastrous example of poor road and transport planning.
"Road management is not just adding more roads and public transport," he said. "Norwest [Business Park] wasn't built as efficiently as it should have been.
"You've got another 50,000 people moving in there, all going to work in their cars because there's no other transport.
"It's a problem now . . . I don't think they'll be able to fix in in the next 20 years."