How long before the expiration of an emissions sticker can a safety sticker be issued?

A safety sticker can be issued up to 90 days before the expiration of an emissions sticker. This allows vehicle owners some flexibility in scheduling their inspections and ensuring that both safety and emissions requirements are up to date without needing a full renewal immediately at the expiration of the current sticker. This timeframe is set by regulatory standards to streamline the inspection process, encourage timely compliance, and help manage the workload for inspection stations. The options representing shorter or longer timeframes do not align with the guidelines established for vehicle inspections in Pennsylvania.