Iowa Admin. Code r. 761-820.1
The following terms when used in this chapter of rules shall have the following meanings:
"AAR signal unit" means the relative maintenance difficulty value assigned to component parts of an active warning device. Units and interpretations are designated by the 2021 Revision of the American Railway Engineering and Maintenance-of-Way Association (AREMA) Communications and Signals Manual, Volume 1, Section 1 (1.3.2) [Recommend Table of Signal and Interlocking Units and Interpretations].
"Active warning devices" means traffic control devices activated by the approach or presence of a train, such as flashing light signals, flashing light signals with cantilever assemblies, and flashing light signals with automatic gate arms, all of which actively warn motorists of a train.
"Maintenance costs of active warning devices" means costs incurred by a railroad associated with the repair or replacement of obsolete, worn out, damaged, or missing component parts of an approved active warning device. Maintenance costs shall include repair or replacement of damaged, vandalized, or stolen component parts only for that amount which exceeds the amount recovered from the liable party or the liable party's insurer.
"Safety fund" means the highway grade crossing safety fund established in Iowa Code section 327G.19 and administered by the department.
Iowa Admin. Code r. 761-820.1