[talk-au] Question about lanes

[John Smith]

2010/1/23 Sam Couter <sam at couter.id.au>:
> There's no indication of how to map asymmetrical roads, Liz's suggestion
> of using 1/2 or 3/2 amuses me.

The most common example I can think of is over taking sections on say
the Pacific or New England or Bruce or .... highways where it isn't
dual carriage way, it goes from 2 lanes (1 each way) to 2/1 or 2/2...

> As a separate issue, how to map roads with differing numbers of lanes,
> perhaps based on time? Pacific Highway at Turramurra is an example, I
> think the Spit Bridge in Manly used to do the same thing. Sydney Harbour
> Bridge also changes the number of lanes used in each direction based on
> traffic flow.

The number of physical lanes doesn't change, although things like the
Harbour bridge where they can assign arbitary numbers of lanes in
either direction would be an interesting one to deal with :)