Changes

From Dresden DB main station; take bus number 66 (MOCKRITZ) to the stop 'Altkaitz' and walk over 'Possendorfer Straße' and the fields in southward direction uphill to the B170, A17 / E55 autobahn interchange. This should not take longer than twenty minutes but saves you hours of waiting somewhere else. Stand right on the bridge over A17 / E 55 before the blue sign 'Pirna'. It took me once only 15 minutes to find a driver bringing me right into Prague (main train station).

Try to get to the first parking lot right after getting on the A17, since the people going to Pirna are also passing there. There are not very many people, but surely everybody is going across the border to the first gas station in [[Czech Republic]].