Municipal Signal Pre-Emption
Description
Pre-emption signal system for emergency vehicles
Status
Planned
Timeframe
Long
Geographic Scope
Emergency Management / Traffic Management
Service Scope
Costs - $6,000/intersection , $2,000/vehicle; Operational & Maintenance Costs (per year) $500.
Stakeholders
City of Niles Public Safety Department
City of Warren Operations Department
City of Warren Public Service and Safety Department
Mahoning County Traffic Department
Inventory
City of Niles Emergency Vehicles
City of Niles Traffic Signal System
City of Warren Emergency Vehicles
City of Warren Field Equipment
City of Warren Traffic Signal System
Mahoning County Field Equipment
Mahoning County Signal Control System
Trumbull County Field Equipment
Trumbull County Signal Control System
Services
EM02-1 - Emergency Routing - City of Niles
EM02-2 - Emergency Routing - City of Warren
EM02-3 - Emergency Routing - Mahoning County
EM02-4 - Emergency Routing - Trumball County
Functional Areas
- The emergency vehicle shall send requests to traffic signal control equipment at the roadside to preempt the signal.
- The field element shall respond to requests for indicator (e.g., signal) preemption requests from emergency vehicles at intersections, pedestrian crossings, and multimodal crossings.
- The field element shall notify controlling traffic management center and maintenance center that the signal timing has changed based on a signal preemption/priority request to help those centers determine whether a fault detected at the signal is a true malfunction or due to a signal override.
- The center shall implement control plans to coordinate signalized intersections, under control of center personnel, based on data from sensors and surveillance monitoring traffic conditions, incidents, emergency vehicle preemptions, the passage of commercial vehicles with unusual loads, equipment faults, pedestrian crossings, etc.
Interfaces
Standards
| SDO | Document ID | Title | Type |
|---|---|---|---|
| AASHTO/ITE/NEMA | View List | NTCIP Center-to-Field Standards Group | Group |
| ASTM | View List | Dedicated Short Range Communication at 915 MHz Standards Group | Group |
| ASTM/IEEE/SAE | View List | Dedicated Short Range Communication at 5.9 GHz Standards Group | Group |
| AASHTO/ITE/NEMA | NTCIP 1201 | Global Object Definitions | Message/Data |
| AASHTO/ITE/NEMA | NTCIP 1202 | Object Definitions for Actuated Traffic Signal Controller (ASC) Units | Message/Data |
| AASHTO/ITE/NEMA | NTCIP 1210 | Field Management Stations (FMS) - Part 1: Object Definitions for Signal System Masters | Message/Data |
| AASHTO/ITE/NEMA | NTCIP 1211 | Object Definitions for Signal Control and Prioritization (SCP) | Message/Data |
| AASHTO/ITE/NEMA | NTCIP 1214 | Object Definitions for Conflict Monitor Units (CMU) | Message/Data |
Operational Concepts
| Stakeholder | Roles and Responsibilities |
|---|---|
| City of Warren Operations Department | |
| Provide intersection signal preemption for City of Warren Fire and EMS | |
| City of Niles Engineer | |
| Provide intersection signal preemption for City of Niles Fire and EMS. | |
| Trumbull County Engineer | |
| Provide intersection signal preemption for emergency vehicles. | |
| Mahoning County Traffic Department | |
| Provide intersection signal preemption for emergency vehicles. |