District 1 Lighting Risk at Signalized Intersections - A custom python toolbox developed by JMT is used in ArcGIS Pro to determine a lighting risk score at signalized intersections. First, a tool is used to assign lighting risk scores to roadway segments. The risk score is calculated for roadway segments as determined by the following criteria: percent of nighttime crashes, percent of pedestrian and bicycle nighttime crashes, night-to-day crash rate ratio, nighttime crash density, and a nighttime crash rate, based on available crash data for 2015-2019. The risk score of each signalized intersection is assigned based on the average risk score of the roadway segments at the signalized intersection. The number of daytime crashes, nighttime crashes, nighttime pedestrian and bicycle crashes, and total crashes are determined and attributed for each signalized intersection. 

This countermeasure analysis result layer and JMT-managed source data layers are to be updated by JMT only upon request of District 1 stakeholders. Source datasets for the analysis include District 1 Signalized Intersections (produced by JMT with data provided by District 1), Crash Data from 2015-2019.  Note that the FDOT-managed source data used in the analysis was downloaded from FDOT's TDA website in file geodatabase format by JMT in May 2022; thus the currently displayed FDOT-managed layers may be out of sync with the analysis source data.  

Contact:  JMT Technology Group: Mallory Gill, mgill@jmttg.com, (757-552-1099)

Published May 2022