Here comes a free PSD of an Outdoor Roadside Poster Mockup. The file is easily and fully editable with smart objects.
The mockup is used for presentation or projects depicting an advertising poster sign on the road. Feel free to use this to show your designs on a roadside poster in this photorealistic PSD mockup.
Moreover, it has a dimension of 3500 by 2300 pixels. smart object layers and minimum photoshop requirement of CS4 and later. You can download it at zippypixels.com in either of the two available licenses.
Zippy Pixels allows you to use it for personal purposes with attribution needed in a personal license. On the other hand, a commercial license allows you to use it for both personal and commercial purposes. Plus, you get four premium mockups as a bonus.
Lastly, in the link, you can also check out other related works such as the advertisement mockup bundle, newspaper ad mockup and so much more.