Question 44

The Correct Answer is B. **Explanation for Option B (an alternately flashing red and yellow light):** This scenario involves a law enforcement vessel operating on **INLAND ONLY** waters. The regulations governing lighting for law enforcement vessels on U.S. Inland Waters are found in the Code of Federal Regulations (33 CFR Subchapter S, specifically 33 CFR 88.11). 33 CFR 88.11 states that a law enforcement vessel, when engaged in direct law enforcement activities, may display a **flashing blue light**. It also explicitly provides an alternate display: **an alternately flashing red and yellow light**. This light configuration is commonly used by government vessels (state and local) on inland waters to signify their special status or operational requirements. **Explanation for why other options are incorrect:** * **A) a high intensity flashing white light (strobe):** While some regulations permit the use of a high-intensity flashing white light, this is specifically regulated for search and rescue (SAR) vessels (e.g., USCG or authorized auxiliary vessels, 33 CFR 88.12) to indicate their function, not generally as an alternate to the blue light for law enforcement patrols on inland waters. * **C) a fixed green light over a red flashing light:** This combination does not correspond to any specific legally defined light signal for law enforcement activity under U.S. Inland Rules. Fixed green lights are typically used as sidelights or range lights, and combining them this way is not the authorized alternate signal for the flashing blue light. * **D) two amber lights in a horizontal line:** Amber (or yellow) lights are sometimes used for special purpose vessels (like dredges or towing vessels constrained by their ability to maneuver), but this specific configuration (two horizontally placed amber lights) is not the legally authorized alternate signal for a law enforcement vessel engaged in patrolling a regatta under 33 CFR 88.11.