My friend's 05 has updated nav from like 3 yrs ago done by the previous owner, and it shows little one way street directional arrows. I updated the nav on my 06 in Dec. with the disc that came out last fall, and I do not have one-way indicators - we even checked the same streets with both cars...is there an option somewhere in the setup menus that enables this, or did they drop it with the update?

 

IIRC it displays one way streets at a certain distance setting, like 1/8 or 1/4 of a mile.

 

Both systems are set to the same fully zoomed in view, and "heading up".