144071
His professional expertise is in urban road network management , including freeway and corridor management , incident management , traffic flow analysis and simulation , traffic signal optimization , traffic sensors and intelligent transportation systems , demand forecasting , evaluation of transportation alternatives , sustainable infrastructure and transportation systems , policies , and regulations .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None