Recent research in emergency communications for VANETs concentrates on developing ultra-fast, reliable dissemination mechanisms for critical safety messages when accidents, breakdowns or road hazards occur. These studies tackle challenges such as high vehicle mobility, fluctuating network density, broadcast storms and intermittent connectivity by introducing cluster-based broadcast strategies, multi-channel coordination schemes, and hybrid V2V/V2I communication models. For example, protocols that dynamically select rebroadcast vehicles based on position and mobility reduce end-to-end delay and collisions. Additionally, urban-environment models are emerging that combine vehicle clustering, RSU-assisted scheduling and prioritized message handling for emergency alerts to minimize packet loss in dense traffic settings. Together, these advances aim to ensure timely and broad receipt of emergency messages by all relevant vehicles even under harsh, rapidly changing conditions.