Las Cruces Regional ITS Architecture Update

City of Las Cruces Signal Preemption Upgrade

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Description

Signal Preemption capability being added to remainder of traffic signal system.

Status

Planned

Timeframe

Short

Geographic Scope

City of Las Cruces

Service Scope

Traffic Management, Emergency Management

Stakeholders

City of Las Cruces Fire Department

City of Las Cruces Transportation Department

Inventory

City of Las Cruces Fire Vehicles

City of Las Cruces Traffic Management Center

City of Las Cruces Traffic Signals

Services

EM02-2 - Emergency Routing - City of Las Cruces (1 of 2)

Functional Areas

Emergency Routing

• The center shall provide the capability to request special traffic control measures, such as signal preemption, from the traffic management center to facilitate emergency vehicle progress along the suggested route.

On-board EV En Route Support

• The emergency vehicle shall send requests to traffic signal control equipment at the roadside to preempt the signal.

Roadway Signal Preemption

• The field element shall respond to signal preemption requests from emergency vehicles.

TMC Signal Control

• The center shall remotely control traffic signal controllers.

Interfaces

Source	Architecture Flows	Destination
City of Las Cruces Fire Vehicles	local signal preemption request	City of Las Cruces Traffic Signals
City of Las Cruces Traffic Management Center	signal control commands	City of Las Cruces Traffic Signals
City of Las Cruces Traffic Signals	right-of-way request notification	City of Las Cruces Traffic Management Center
City of Las Cruces Traffic Signals	signal control status	City of Las Cruces Traffic Management Center

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 Las Cruces Fire Department
	Receive local signal preemption at the City of Las Cruces traffic signals for fire vehicles.
	Respond to emergencies with the City's police, fire and EMS vehicles.
City of Las Cruces Transportation Department
	Operate network monitoring equipment (CCTV Cameras, field sensors, etc.) on City streets.
	Operate traffic signal systems on City owned streets, including traffic signals, sensor systems (CCTV), and right of way requests.
	Provide emergency signal preemption for the region's Fire and EMS vehicles.