Millions of people are dying and billions of properties are damaged by road tra c accidents each year worldwide. In the case of our country Ethiopia, the effect of tra c accidents is even more by causing injuries, death, and property damage. Forecasting Road Tra c Accident and Predicting the severity of Road Tra c accident contributes a role indirectly in reducing road tra c accidents. This Study deals with forecasting the number of accident and prediction of the severity of an accident in the Oromia Special Zone using Deep Arti cial Neural Network models. Around 6170 Road Tra c accidents data are collected from Oromia Police Commission Excel data and Oromia Special zone Tra c Police Department, the dataset consists of accidents in the Special Zone of Oromia Districts (Woredas) from 2005 to 2012 with 15 accidents attributes. 5928 or (80%) of the dataset was used for the training model and 1482 or (20%) of the dataset was used for the testing model. This study proposed Six different Neural Network architectures such as Backpropagation Neural Network (BPNN), Feed Forward Neural Network (FFNN), Multilayer Perceptron Neural Network (MLPNN), Recurrent Neural Networks (RNN), Radial Basis Function Neural Network (RBFNN) and Long Short-Term Memory (LSTM) models for accident severity predictionand The LSTM model for a time serious forecasting of number accidents within speci ed years. The models will take input data, classify accidents, predicts the severity of an accident. Accident predictor GUI has been created using Python Tkinter library for easy Accident Severity prediction. According to the model performance results RNN model showed the best prediction accuracy of 97.18% whereas MLP , LTSM, RBFNN, FFNN, and BPNN models showed the accuracy of 97.13%, 91.00%, 87.00%, 80.56%, 77.26%, respectively. LTSM model forecasted accident for Three years which is 3555 where the actual accident number is 3561. The prediction and forecast result obtained from the model will be helpful in planning and management of road tra c accidents. accident accounted 2.1% of all deaths, this makes them the 11 th leading cause of global deaths.Road tra c injuries place a heavy burden on household nances, not only on global and national economies. Many families are driven deeper into poverty by the loss of breadwinners and the added burden of caring for members disabled by road tra c injuries.The Global status report on road safety, launched by the World Health Organization (WHO) in December 2018, highlights that the number of road tra c deaths has reached 1.35 million annually [2]. And Road tra c crashes cost most countries 3% of their gross domestic product. It is supposed that 30 to 50 million people are exposed to physical disability annually by tra c accidents in the world according to the World Health Organization (WHO) reported in 2012. This report included that more than 600-billiondollar property can be damaged by tra c accidents annually.Road tra c injuries are currently estimated to be the 9 th leading cause of death across all age gro...