The other side is perfectly painted to match the path, like a Wile E Coyote tunnel mural

The public road curves left, but the private pathway to the camera owner’s residence leads straight from the road. And I suppose a gate is not what people expect to be in their way.

Or flag it. Or paint the road to indicate it curves (transportation authority may object). Or realign the driveway entrance so it’s clearly a turn. Or multiple indicators.

He is complicit and may even be liable since people are getting hurt on his property because of unclear signage. It’s both understandable and predictable that people will get hurt doing this.