Innocuous possibilities:
* Delivery: Many businesses use white vans for deliveries. Tinted windows are common to protect packages from sun damage and prying eyes.
* Service person: A plumber, electrician, or other service professional might arrive in a white van.
* Contractor: Someone working on your home or property.
* Friend or acquaintance: Someone you know might be using a rental van or a van for work.
More concerning possibilities:
* Suspicious activity: While not necessarily inherently dangerous, the combination of a white van and tinted windows is often associated with stereotypes of criminal activity in media. If you feel uneasy, it's a valid feeling.
* Targeted harassment or stalking: If the van is lingering or the occupants are behaving suspiciously, this is more serious.
* Wrong address: They may simply be at the wrong house.
What to do if you're concerned:
* Don't approach the van: Your safety is paramount.
* Observe from a safe distance: Note any distinguishing features of the van (license plate number, logos, etc.).
* Call the police (or your local emergency number) if you feel threatened or unsafe: Explain the situation calmly and clearly.
* If you are expecting a delivery, contact the company to confirm: This helps determine if it is a legitimate delivery or not.
In short, without more information, it's impossible to say definitively what a white van with tinted windows at your door means. Err on the side of caution if you feel uneasy. Your safety is the most important thing.