815 R.I. Code R. 815-RICR-50-20-1.2
All newly acquired self-propelled on track equipment, ordered on or after the effective date of these regulations, weighing 10,000 lbs. or more shall be equipped with full cab enclosure with heater and fan, windshield safety glass, windshield wipers, horn, mirrors both sides, flashing strobe lights front and rear (except equipment with rotating deck shall have rear lights only), turntable warning light if equipped with turntable, two-way radio if part of the equipment could foul adjacent track during normal operations, and adequate work lights. The operator shall have clear view in travel directions. Operator's compartment shall be constructed in such a manner to protect operator from injury caused by equipment protrusions or hydraulic hose ruptures.
815 R.I. Code R. 815-RICR-50-20-1.2