The A12 autostrada and the old Via Aurelia (which ends up in Arles in French Provence) take you to Tarquinia.
Tarquinia can be reached using the Via Aurelia.
mnli hypothesis: Tarquinia can be reached using the Via Aurelia. premise: The A12 autostrada and the old Via Aurelia (which ends up in Arles in French Provence) take you to Tarquinia.