The first Curb Guided Bus (CGB) route opened in 1980. Although initial introduction of this technology was slow, six routes have opened since 1998, and more are in the works, mostly in the U.K. This paper presents a comprehensive review of the technology and its deployment.
An Update on Curb Guided Bus Technology and Deployment Trends.
Journal of Public Transportation, 9 (3): 163-180.
Available at: http://scholarcommons.usf.edu/jpt/vol9/iss3/9