At least part of Center Street is one way going towards South Peterboro Street so you cannot turn onto Center Street from South Peterboro Street but since I've only seen the one way signs from Peterboro Street so I'm not sure if all or only a small part of Center Street is one way

There might be a highway=residential here that needs to be surveyed

Is this Towne Drive (which is what's on Tiger and on OSM or is it Towne Center Drive which is what it says on a receipt from Jo-Ann Fabric and Craft says it is

This intersection needs to be resurveyed. For starters it's flagged as a dead-ended one way on keepright http://keepright.at/report_map.php?schema=25&error=37080306 also it doesn't look like you should be able to make a left turn from the secondary_link that comes from Canal Street on to Main Street from the aerial imagery but the secondary_link was split on OpenStreetMap so you can do just that

This area needs to be surveyed I just drove through here a little while ago and I saw that one of these streets (either East Bissell Street or Onondaga Creek Parkway) was one-way but only on the east side of South Avenue

The TIGER overlay shows that part of what is only labeled as name=Brewerton Road on OSM should be named North Main Street. Most likely between the intersection of Church Street (where right now South Main Street turns into Brewerton Road) and the intersection of Bear Road. So someone needs to survey the road signs the next time they are on South Main Street, North Main Street, and Brewerton Road so we know where the name changes happens.

Is Van Mara Drive oneway? There is a no right turn sign on Church Street but I didn't look for a oneway sign on Van Mara Drive itself

I think there should be a road here but I can't survey it to make sure