Is it legal for a driver to leave a vehicle unoccupied with the ignition on but in the park for any length of time?

Leaving a vehicle unoccupied with the ignition on, even if it is in park, is generally not legal in many jurisdictions due to safety and security concerns. This practice can lead to theft or unauthorized use of the vehicle. Specific laws can vary by state or locality, so it's important to check local regulations for any specific rules regarding unattended vehicles.