Which of the following vehicles may display a red and white or red and blue lamp?

The correct choice is associated with funeral escort vehicles because they are authorized to use specific emergency lighting to alert other drivers on the road. In Indiana, these vehicles may display red and white or red and blue lamps while performing their escort duties. This use of lights helps to ensure the safe and respectful transport of funeral processions, as they signal to other drivers to yield the right of way.

In contrast, private passenger vehicles, delivery trucks, and construction vehicles do not have the same regulations that allow for the use of red and white or red and blue lights. Their use of lights is typically limited to standard headlights, tail lights, and turn signals, which serve to indicate their presence on the roadway without the emergency implications associated with funeral escort vehicles.