How long does one have to inspect newly-purchased vehicles that do not have a valid inspection?

In Pennsylvania, newly-purchased vehicles that do not have a valid inspection must be inspected within 10 days of the purchase date. This timeframe is provided to ensure that new vehicle owners comply with safety and emissions standards promptly after acquiring their vehicles. It helps to maintain road safety by ensuring that all vehicles on the road are adequately inspected and meet the necessary requirements for operation.

The other options suggest longer timeframes, which are not applicable in this context. It's crucial for vehicle owners to be aware of this 10-day regulation to avoid penalties or issues with law enforcement.