This document discusses advance methodologies to ensure road safety. It presents a GIS-based accident analysis system developed for Chennai, India. Accident data from 2010-2012 was collected and analyzed using GIS software. This identified accident prone zones and black spots. Photogrammetry techniques were also used to map accident scenes and measure vehicle crush depth to determine accident causes and vehicle speeds. The analysis found that careless driving and overspeeding were primary causes. It concludes that GIS and photogrammetry can help accurately analyze accidents to improve road safety.