Details Plus scale grade crossing signals adhere to the Department of Transportation's specification for height, lamp fixture diameter and other important dimensions. Details include:

The blue "Report a Problem" sign is included.
Track number signs are included as a separately applied part with decals for 2, 3, and 4 track crossings.
Each style is available in both lighted and non-lighted versions. The non-lighted versions have more delicate struts supporting the lamps. They're perfect for the modeler who wants an accurate signal appearance but doesn't want the cost and complexity of an electronic autodetection system.