It is possible to consult local public transport services at this address: www.comune.sangimignano.si.it/it/page/trasporto-pubblico-locale
The paid parking lots available for cars are from P1 GIUBILEO, P2 MONTEMAGGIO, P3 BAGNAIA SUPERIORE, P4 BAGNAIA INFERIORE, P5 SANTA LUCIA, the latter for RV parking.
Schedules and prices can be seen at the website of the Municipality of San Gimignano
It is possible to monitor parking availability in real time