What is the main resource document for phase 1 of drivers training?

The main resource document for phase 1 of drivers training is TC 21-305-20. This training circular provides comprehensive guidance regarding the instruction and evaluation of Army drivers, specifically focused on foundational driver skills and knowledge necessary for operating military vehicles. It is designed to ensure that training is standardized and meets Army requirements, thus forming the backbone of the initial phase in driver training programs.

Other documents, while relevant in different contexts, serve different purposes. For example, FM 3-21.8 relates to infantry operations and tactics rather than driver training specifically. AR 600-55 outlines the Army's overall policy regarding driver and vehicle safety but does not delve into the specific training phases. DA Pam 385-64 is focused on safety aspects related to the operation of Army vehicles, which is critical but not the primary focus during phase 1 of driver training. Hence, TC 21-305-20 is essential in providing the core framework and detailed instructions that underpin phase 1 driver training in the Army.