This paper describes the development of delta‐V and pre‐crash speeds by crash type and vehicle type for crashes on Indian roads as part of Road Accident Sampling System – India (RASSI), an in‐depth database of India road accident data. In addition, it highlights some of the difficulties faced in reconstructing accidents in a developing country. The paper includes analyses of approximately 1,000 accident cases from 2011 to 2014 in RASSI. The RASSI project is modeled on well‐known crash data studies and databases from countries such as the USA, UK, and Germany, but uses India‐centric collection methodologies. Reconstruction was done for approximately 700 vehicles, and analysis was made of impact speeds of cars, trucks and motorized two‐ wheelers, including comparison with available data for US counterparts. Results show that 19% of crash‐ involved vehicles in India have a delta‐V less than 5 mph (8 km/h), while in the US, 5% of crashes have a delta‐V less than 5 mph. Nearly 30% of vehicles involved in a crash in India have a delta‐V greater than 25 mph (40 km/h) whereas only 4% of the crashes in the US have a delta‐V greater than 25 mph (40 km/h). These differences could be due to factors including the size/weight incompatibility seen on Indian roads between colliding vehicles, travel speed and higher percentage of rear‐end crashes.
Keywords:
Accident reconstruction, delta‐V, impact speeds