]
Historical Event: 
Historical event after the adoption of Vision Zero, in January 15, 2014. Prior to the Adoption Zero, in 2012 Hurricane Sandy struck NYC and damaged the streets infrastructure. In the time series, reflects the effectiveness of Vision Zero began in mid year of 2015. 
Reject the hypothesis  
The test rejects the hypothesis of normality when the p-value is less than or equal to 0.05. Failing the normality test allows you to state with 95% confidence the datadoes not fit the normal distribution. Passing the normality test only allows you to state no significant departure from normality was found.
Future Work
Outcomes and Finding 
Finding and Mitigation based on plot 1 and 2 reflecting the probability the completive number of accidents based on before and after Vision Zero was adopted.  
The following are some recommended mitigation measures: