Getting There -- If taking the train from Palermo, you'll pull into the station at Trapani. AST buses (tel. 0923-23222) to Erice depart from Trapani's Piazza Montalto, at the rate of 11 per day. Service is year-round, daily from 6:40am to 7:30pm. The trip lasts 50 minutes and costs 2€ ($2.40) one-way.
By car from Trapani, head out on the Via Fardella to the end of the street. At some point near the end of the wide boulevard, you'll see signs pointing the way to Erice. Follow A29 all the way to Erice.