Final answer:
GDL decals, which are part of the Graduated Driver Licensing system and required for new drivers to display, vary in color based on the jurisdiction. There is no standard color, and they can be red, as in New Jersey, or different colors in other locations.
Step-by-step explanation:
The question "GDL decals are what color?" refers to the color of decals associated with the Graduated Driver Licensing (GDL) system, which is a program designed to provide new drivers of motor vehicles the opportunity to practice driving under lower-risk conditions before obtaining full driving privileges. In many jurisdictions, especially in the United States and Canada, new drivers under the GDL program are required to display a specific decal on their vehicle that often varies in color by state or province. As of my knowledge cutoff in 2023, there is no uniform color for GDL decals; it can vary widely depending on the location.
For example, in New Jersey, the decal is red. It's essential for young drivers to be aware of their own state or province's requirements for these decals. The color and design of the decal is an important part of the GDL system because it helps the police and other motorists recognize that the driver is still gaining experience.