IA HF938

Removes the word "official" from Iowa Code provisions describing authorized emergency vehicles, including fire department vehicles, police vehicles, rescue vehicles, ambulances, emergency medical services vehicles, and emergency management vehicles

Clarifies that drivers of these emergency vehicles may exercise certain traffic exemptions when using audible warning devices or visual signaling devices authorized under state law

Permits law enforcement, fire department, emergency medical services, and emergency management vehicles owned by the state or municipalities to be equipped with flashing headlamps

Allows emergency vehicles to be equipped with rear zone amber lights or amber directional arrows, while prohibiting amber lights on the front or side (except for aerial fire apparatus outriggers)

Maintains existing requirements that fire department and emergency medical services vehicles purchased, delivered, or refurbished after July 1, 2021, must have a master warning switch to activate all emergency lights, and those acquired after July 1, 2022, must have electric or electronic sirens with at least two distinct tones