Driving to Ljubljana is a joy due to the good roads and excellent signposting. The city is circled by a ring road from where it's easy to get to the centre. Simply follow the parking signs for convenient places to leave your car near the city centre. Once in the city, it's best to walk the short distances rather than drive through the heavy traffic and narrow street. A Vinjeta is legally required. Also, if you're staying in Old Ljubljana be aware that it is largely a pedestrian only zone.