1. Agrawala, M., & Stolte, C. (2000). A design and implementation for effective computer-generated route maps. In AAAI Technical Report SS-00-04.
2. Implementing Graphic Route Information Panels (GRIPs) in the United States;Aitken;ITE Journal,2012
3. Alkim, T. P., van der Mede, P. H. J., & Janssen, W. H. (2000). Graphical route information on variable message signs. In Road Transport Information and Control, 2000. Tenth International Conference on (Conf. Publ. No. 472), pp. 32–36.
4. Brave, E., & de Baar, A. (2009). Road users positive about graphical congestion information on bermDRIPs. Netherlands, Rijkswaterstaat – DVS Centre for Transport and Navigation, communication from Whitehead, P. Highways Agency, March 2009.
5. Campbell, J. L., Carney, C., & Kantowitz, B. H. (1998). Human factors design guidelines for Advanced Traveler Information Systems (ATIS) and Commercial Vehicle Operations (CVO). US Department of Transportation, Federal Highway Administration. Report number FHWA-RD-98-057. Accessed at http://www.fhwa.dot.gov/tfhrc/safety/pubs/atis/index.html, 6 April 2009.