Hi,
I start to play with API v3 and I have a conceptual problem:
I need something like traffic overlay but with own data.
Basically I need to print two line (one for every direction of a
street) and dynamically change the color.

The main problem is what can I use for this: polyline or polygons?
- with polyline the thickness of it is the same in every zoom level
so, if i see two lines in zoom level 8, i see only one on 15 because
they are overlapped.
- with polygon on zoom 15 (f.e.) i can't see them because are too
small (i try to print a path with thickness 1 and printed like a
street)

I try to understand what use google in traffic but I can't.

Any help?

I will use javascript API v3

Thank!

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