Written in Japanese.This visual reference guide documents prototype and pre-production rolling stock developed by the Japan Railways (JR) Group from 1987 to the present. The text provides technical explanations for experimental trains, including electric multiple units (EMUs), diesel multiple units (DMUs), Shinkansen, locomotives, and freight vehicles. It features rare photographs of test cars built to evaluate new technologies and design concepts. The content is categorized by propulsion type and service application. One section details the transition from initial testing to mass-production models. Softcover.