Volume 11 of the 19-volume Highway Safety Program Manual (which provides guidance to State and local governments on preferred highway safety practices) concentrates on emergency medical services. The purpose of the program, Federal authority in the area of medical services, and policies related to an emergency medical services (EMS) program are described. Program development and operations (EMS system functions and components, postadmission, State EMS program elements, and personnel training) are presented. Criteria and methodology for program evaluation and different types of reports (operational, management, program evaluation, and National Highway Traffic Safety Adminstration) are explained. Local government participation and funding criteria for 402 EMS projects are reviewed. Appendixes (one-half of the document) contains the Highway Safety Program Standard 11, Implementation Guidelines; a glossary of definitions; references; representative projects; resource organizations; the economics of ambulance service; materials on EMS helicopter use, personnel training, EMS systems, job descriptions, EMS planning, communications, advisory groups; forms or guidelines for regulating ambulance service, contracting for such services, and for use in emergency rooms; and a list of National Highway Traffic Safety Adminstration administrators. (NH)