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Office of Traffic Management Contacts



John MacAdam.png 
John MacAdam, P.E.
  • TSMO Program Manager
  • OHGO Project Manager



Carl Merckle
Incident Management Coordinator
614.644.7165 (p)
614.917.7545 (m)
  • Emergency Operations Coordinator


Tim Boyer, P.E.
Weather Management Engineer
614.752.5732 (p)
614.254.4504 (m)
  •  RWIS Coordinator


John McKnabb.png 
John McKnabb
TMC Supervisor (AM)
614.466.4224 (p)
614.570.5739 (m)
  • Freeway Safety Patrol Coordinator



Leslie Prater
Emergency Operations Coordinator
614.752.6936 (p)
614.314.7626 (m)
  • Emergency Relief Coordinator



Stephanie Marik, P.E.
Engineering Analyst
  • Analytics and Performance Measures Engineer
  • Regulations Coordinator


 Dominic DelCol
TMC Supervisor (PM)



Jim Roth, P.E.
State Signing Engineer
  • TRIP Program Coordinator
  • LOGOS Program Coordinator
  • Freeway Safety Patrol Coordinator