According to their Noise and Vibration section of the report, their plan for horn noise is to assist cities with setting up quiet zones. A child comment mention

According to their Noise and Vibration section of the report, their plan for horn noise is to assist cities with setting up quiet zones. A child comment mentioned this possibility. Exactly what that means is unclear. Search for NV-MM#4 in this document: https://hsr.ca.gov/wp-content/uploads/2022/05/Final_EIRS_FJ_V1-12_CH_3.4_Noise_Vibration.pdf https://hsr.ca.gov/wp-content/uploads/2022/05/Final_EIRS_FJ_...