🔍 Key Concepts

• Code of Federal Regulations (CFR) as the place where legal minimum requirements are published • Purpose of Light Lists versus legal standards • What types of info are found in Chart No. 1 and Notice to Mariners

💭 Think About

• Ask yourself: which publication actually contains enforceable minimum legal requirements rather than just descriptions or updates? • Consider what a Light List on a specific river system mainly provides: is it general law and standards, or specific aids-to-navigation data? • Think about what Chart No. 1 and Notice to Mariners are mainly used for in daily navigation and whether they define minimum bridge lighting requirements.

✅ Before You Answer

• Verify which source is the official repository of federal regulations for navigation and safety standards. • Check whether Light Lists describe existing lights or set minimum required lighting standards. • Confirm that Chart No. 1 is primarily a symbol reference, and Notice to Mariners is for corrections and updates, not basic legal requirements.