In recent decades, pre-predicting the roadway accidents is essential for real time traffic incident management that effectively minimizes the environmental pollution, traffic congestion and secondary incidents. Currently, the traffic data are available in thousands of public and private datasets and also generates terabytes of data each year. Though, it is infeasible to manage the huge datasets by utilizing traditional software and hardware. It is therefore essential that an automated system to predict road accidents is developed. The present review paper investigates the researches done on road accident prediction, particularly for urban roads under heterogeneous traffic conditions. It also explores the problems faced in existing works by researchers. This review paper helps researchers achieve a better solution for the current problems faced by heterogeneous traffic conditions when it comes to urban road accident prediction. The findings demonstrate that the operating speed and the disparities between the speed restrictions and the operating speed are the key factors influencing the accident frequency rate.

Bond is generally noted to be most costly constituents of cement. The whole development industry is looking for an appropriate and viable the waste item that would extensively limit the utilization of concretes and at last lessens the development cost. Rice husk slag (RHA) which has the pozzolanic properties is a route forward. A relative report on impacts of solid properties when OPC of differing evaluations was mostly supplanted by RHA is examined in this paper. Rate supplanting of OPC with RHA was 0, 10, 20, 30 and 40% individually. The compressive quality, water ingestion, shrinkage and solidness of cement were for the most part considered. The examination recommends that up to 20% supplanting of OPC with RHA can possibly be utilized as halfway concrete substitution, having great compressive quality execution and durability. Percentage supplanting of OPC with Aluminum powder (Al) is 0.5% which is kept steady. We are utilizing M sand rather than typical sand to diminish the expense of development and builds quality and sturdiness concrete. The examination proposes the supplanting of concrete with RHA and Aluminum powder expands the compressive quality, solidness, and diminishes the expense of development.

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