I was browsing the web regarding Rome and came across this...
Health & safety: Dangers & annoyances
Rome is not a dangerous city but petty crime is rife.
Road safety is also an issue. The highway code is obeyed with discretion so don’t take it for granted that cars and scooters will stop at pedestrian crossings, or even at red lights. The only way to cross the road is to step confidently into the traffic and walk across, ideally in a group, best of all with a nun.
If I am in Rome with my wife I will get her to a nuns habit, so that we can confidently cross Rome's streets.