Everyone who has spent more than a week in Rome will be familiar with the number 64 bus that starts at San Pietro station, runs past the Vatican, crosses the Tiber and runs through the Centro, stopping at the Argentina tram stop and on up the hill to Termini train station.
If you get on it anywhere after the St. Peter's end of the loop, this is what it is like. We were trying to get home from the Quirinale the other night and that is closer to the Termini end of the route. We had to let six buses go by before there was one we could get on.
And then there's the gypsy pickpockets. There's a reason they call the 64 the Pickpocket Express, though I've been lucky so far.
Here's a tip for those staying in Santa Marinella: get any of the main route buses to Argentina, which is a major bus convergence point, and wait the extra few minutes for a number 70. This will take you up most of the route to Termini, but swings past Mary Major and takes you down to the other end of the Termini station. This will help you avoid all the horrors of the 64, the pickpockets, the sardine-packed crowds, and at the end save you a 10 minute walk down to the end of the station where the Civitavecchia/Pisa/Grosseto trains leave.
The 64 is somewhat notorious.
H/T to Vicky for the pic.