Here is a detailed map/diagram regarding my ticket. Zoom in all the way. If you look at the details of the pushpins on the map, and hit "more info" link under the descriptions, it will take you to close up images of google street view.
So I got a ticket for crossing a divided highway from the El Cerrito, CA Police dept. For part of my defense I am leaning towards a police county Jurisdiction angle. I believe I was just right outside the jurisdiction of the police that ticketed me by a few feet, by looking at the city limit signs for both city and county on both sides of the street. However, looking at yahoo, google, and bing maps though, the city/county limit line doesn't match the city limit signs on the street. But some of the physical address of buildings, and streets don't follow the line on their maps either. I looked at a physical map of the east bay, and there isn't enough detail to discern, the small street I pulled out of isn't even on that map. Ive tried to look for map images online and they dont have enough resolution or detail for my area of interest.
I guess my question is will the court go off the street signs alone for accuracy on this matter, or do I need to go to some official city government building, for an official map. I'm thinking that even an official map from the city wont have enough detail or resolution for my purposes to really discern where the county line is by a couple of yards. I think the street signs should be used for accuracy in this matter, I don't see ho they could argue the inaccuracy of their own physical street signs.
I also called the El Cerrito Police HQ, and asked about their Jurisdiction, thy have no Jurisdiction in Alameda County I was told. The Cadet also mentioned that they only go as far south as Fairmount Ave. Which is just north of Carlson Blvd. I'm not counting that that comment on Fairmount Ave. to hold up in court though.
Any help on this matter would be greatly appreciated, Thank you. Also comments on other details of the ticket based off the diagram would be great.

