4 ms·Any ideas? All I've got are either gates or geofenced shock collars.by fuzxi 6y agoAny ideas? All I've got are either gates or geofenced shock collars.antonyh 6y agoHow about a sign that says 'Cattle Grid' that both people and cars can read. It'd help protect motorcycle/bicycle/horse riders too.gregjw 6y agoVery high tech.