ARM 18.6.302. THE DIAGNOSTIC REVIEW PROCESS

(1) A diagnostic review will be conducted by a diagnostic review team at the site for each public at-grade railroad crossing considered for: (a) proposed signals; (b) upgrade of existing signals; (c) proposed removal of signals; (d) circuitry upgrade; (e) road approach work; (f) closure; (g) other safety improvements deemed necessary by the diagnostic review team; and (h) interconnection between railroad signals and traffic control signals. (2) The road authority, railroad or MDT can request a diagnostic review be initiated to address specific or unusual needs at a public at-grade crossing.