TM 5-628/AFR 91-44, TECHNICAL MANUAL: RAILROAD TRACK STANDARDS (08 APR 1991)

TM 5-628/AFR 91-44, TECHNICAL MANUAL: RAILROAD TRACK STANDARDS (08 APR 1991)., The standards contained herein are promulgated to protect investments in track maintenance and rehabilitation and to ensure that Army and Air Force track is maintained at the level needed to support mission requirements.