I've only had the system in my volvo get confused a couple of times in work zones. I haven't figured out the exact combination that triggers it, but when you have temp lines that got over other lines gradually that seems to confuse it a bit. but if the lines are at more severe angles to each other it seems to handle it just fine.
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When driving in NJ (specifically Northern Jersey). I always thought that law had to be, turn signals optional, but if they are on, said car is coming over right away regardless of safety or a car in that lane. Well at least is the way the majority of the people on the major roads seem to drive
My 4 year old Cross Country has Lane Departure Systems. And that is the way they work. You cross the lines it beeps at you. You cross the lines with your blinker on, and it assumes you meant to do the turn. It is pretty handy feature to have.
Well sorbs (like most DNSBL's) is based on IP address, so generally speaking the users's email address isn't passed over the wire (in terms of BL usage).
If you allow root to login via ssh from $internet with a password (Regardless of strength). You've probably got issues... Seriously, Port knocking + moving the default ssh port + Public key to a non priv'ed account with a great password (for sudo access), and you are probably a bit better off. Now I have no idea if these devices can do any/all of that, as I have no interest in deploying them to find out.