As a UK citizen now living in Canada (where things are basically the same in cities), one thing struck me about the road system overall. The whole city-planning grid layout thing means that there are an *insane* number of 4-way stop-sign junctions. To me they are more of a concern than traffic lights just due to sheer density of them. You look on a map and think "great, it's a straight line, I'll be there in no time", but you have to stop and start so much and it seems so backwards (to me, at least). Takes more time, wears out your brakes, uses more fuel... Perhaps it's a call for mini-roundabouts, or maybe just more give-way signs (called "yield" signs in Canada). When I see the occasional one here, I'm taken aback to my home country and think "gee... why aren't there more of these here?!"