In which of the locations is parking of vehicles prohibited?

• 1In the zone of dangerous curves and convex breaks in the road's longitudinal profile with visibility or sightlines of less than 100 m in at least one direction of travel outside built-up areas.
• 2Closer than 50 m to railway crossings.
• 3More than 100 m before railway crossings outside built-up areas.
• 4Answers 1, 2, and 3.
• 5Answers 1 and 2.