There has been an increase in the road trafficas well as the rail traffic , accidents at level crossing has increased and this has caused the concern for the Indian railways. There are certainly many ways to solve this issues but there are major concerns regarding its feasibility for the current environment. Along this factor the cost factor remains the major concern. In this paper, we are proposing a simple solution for the level crossing in which we fix the Radio Frequency tag (RF tag) on the train .we also fix RF tags on each level crossing to communicate with each other, in order to gather the details about the level crossing , train location , train timings and density of vehicles passing the level crossing. These information are send to the database server through Internet Of Things (lOT).

A Distributed file system (DFS) is a storage component of a distributed system (DS). DS consists of multiple autonomous nodes connected via a communication network to solve large problems and to achieve more computing power. One of the design requirement of any DS is to provide replicas. In this paper, we propose a new replication algorithm which is more reliable than the existing replication algorithm used in DFS. The advantages of our proposed replication algorithm by incrementing nodes sequentially (RAINS) is that it distributes the storage load equally among all the nodes sequentially and it guarantees a replica copy in case two racks in a DS are down. This feature is not available in the existing DFS. We have compared existing replication algorithm used by Hadoop distributed file system (HDFS) with our proposed RAINS algorithm. The experimental results indicate that our proposed RAINS algorithm performs better when more number of racks failed in the DS.