Under Iowa law, what vehicles are required to display a slow-moving vehicle (SMV) triangle?
Only farm tractors.
The rule covers more than tractors.
Any vehicle operating on public roads at 35 mph or less.
Vehicles without working taillights.
Taillights are a separate requirement.
Only Amish horse-drawn buggies.
The rule is not limited to buggies.
Iowa requires the orange reflective Slow-Moving Vehicle (SMV) triangle to be displayed on the rear of any vehicle using public roads and traveling 35 mph or less. This includes tractors, horse-drawn vehicles, construction equipment, and certain utility carts — common in rural Iowa.
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