> It's a 5 minute drive or 30 minute bus ride to get to the light rail centre from my location (others are closer, some are farther). Some are content to take a bus, but many others drive. There are some who cycle but it's a tiny percentage.

That's simply not close enough. The station must be within a 10-minute bike ride to disrupt the car-centric commute. Ideally the rail stops must be spaced about 3km apart, then there's a corridor 5km wide that lets everyone inside use their bikes to commute.