Prepared by the Automated People Mover Standards Committee of the Standards Council of the Transportation and Development Institute of ASCE. Automated People Mover Standards, ANSI/ASCE/T&DI 21-13, establishes the minimum requirements necessary to achieve an acceptable level of safety and performance for an automated people mover (APM) system. An APM is defined as a guided transit mode that is fully automated, featuring vehicles that operate on guideways with exclusive right-of-way. This Standard covers design, construction, operation, and maintenance of APM systems. This fully updated revision consolidates all four parts of ASCE 21 that previously were published separately. Topics include: operating environment; safety requirements; system dependability; automatic train control; audio and visual communications; vehicles; propulsion and braking; electrical equipment; stations; guideways; security; emergency preparedness; verification and demonstration; operations, maintenance, and training; and operational monitoring. One mandatory annex covers requirements for system safety programs. Nonmandatory annexes include a bibliography, recommended practice for acceptance of an APM system application; inspection and test guidelines; and recommended practice for working safely near APM systems. This Standard may be used in a safety certification process. It will be helpful to anyone who owns, operates, maintains designs, test, insures, oversees, or certifies APMs. It will also be valuable to transportation engineers, safety engineers, and contractors for APM systems or other innovative technology transit systems.