=+55. Along any major freeway we often encounter service (or logo) signs that give information on attractions, camping, lodging, food, and gas services in advance of the off-ramp that leads to such services. These signs typically do not provide information on distances. Researchers in Virginia, with cooperation from the Virginia Department of Transportation, performed an experiment to see if the addition of distance information on the service signs would affect drivers. The results of this experiment were reported in “Evaluation of Adding Distance Information to Freeway-Specific Service (Logo) Signs” (J. of Transp. Engr., 2011:

782–788).