The logo of Autolinee Toscana, which is the bus company that runs all local (Florentine) and regional (Tuscany) buses

I just stumbled across what at first appeared to be a very useful web page called "Destination Tuscany" from AUTOLINEE TOSCANE S.p.A. Unfortunately, most of the links on the page are broken or link to out of date information. Below are some tips with links to the actual information and other pertinent edits:

Arrivals & Departures

• To reach Florence from Peretola Airport, use T2 tram line - all the info is here
• To reach Pisa from G. Galilei Airport, use Bus Line 3+ of the Pisa urban service
• To travel between Siena and Florence, use suburban line 131 or 131R express line
• To reach the historic centre of Siena from the FS station, use Bus Line 0S3 of the Siena urban service

Tickets & Fares

• Autolinee Toscane actually has an iPhone app now - the not greatly named "at bus". Supposedly you can search routes and buy tickets with this app - but - it is not well reviewed.
• There is also "tip tap" which is supposed to be rolled out across Tuscany now. This option allows you to tap your credit/debit cards (with chips), smartphones, and enabled wearables to buy on board (but - if you need tickets for more than you [or one person] you will need to use the aforementioned app). Mastercard, Visa and American Express cards are accepted (kind of amazing that Amex is accepted - it is usually shunned in Italy).

Bus Travel Tips

• You must have a ticket and it must be validated at the beginning of each trip (I think this refers to the older paper tickets and not the electronic alternatives mentioned above).
• You can carry one piece of luggage, up to 105 cm (43 inches) in size, for free (I have never seen this enforced, and am surprised to see it in writing here - also - 43 inches? In total? Very unclear...).
• Children under one meter (under 39 inches to be safe) in height travel for free.
• Pets ride for free, provided they are kept in a carrier no larger than 140 cm (about 55 inches) and do not occupy a seat.

If you have any tips of your own, or can share an experience related to bus travel in Florence, leave a comment below!