Understanding START Triage Color Coding: Red, Yellow, Green, Black

When chaos erupts and a mass-casualty incident (MCI) unfolds, seconds count. First responders face immense pressure, needing to make rapid, life-or-death decisions with limited resources. How do you quickly identify the most critically injured among dozens, or even hundreds, of victims?

The challenge isn’t just treating the injured; it’s efficiently categorizing them to ensure those who can benefit most from immediate intervention receive it. Without a clear, systematic approach, precious time can be lost, and valuable resources misallocated. This is where a standardized triage system becomes indispensable, providing a roadmap through the initial pandemonium.

That’s why emergency services personnel across the nation rely on the Simple Triage And Rapid Treatment (START) system. Designed to be easy to learn, easy to remember, and easy to use, START provides a common language and methodology for prioritizing patients in an MCI. Our organization, deeply rooted in emergency response education for over 40 years, offers a clear path to mastering these life-saving skills, beginning with START training materials that equip responders for real-world scenarios.

What are the four triage codes?

The START triage system uses four distinct color codes – Red, Yellow, Green, and Black – to categorize patients based on the severity of their injuries and their likelihood of survival given immediate or delayed intervention. These codes are assigned rapidly, often in 60 seconds or less per victim, to help first responders allocate resources effectively at the scene of a mass-casualty incident.

Each color represents a different priority level for treatment and transport. This systematic approach, developed in 1983 at Hoag Hospital and Newport Beach Fire Department in California, helps reduce decision fatigue under pressure and ensures an organized, memorable method for initial patient assessment. The color coding isn’t merely descriptive; it’s prescriptive, guiding the subsequent actions of medical personnel.

“Effective triage is the cornerstone of mass-casualty incident management, allowing responders to provide the greatest good for the greatest number. Standardized systems like START ensure a consistent approach, even when resources are stretched thin.”

— Centers for Disease Control and Prevention (CDC)

What are the meanings of Red, Yellow, Green, and Black tags?

Understanding what each color signifies is crucial for any first responder or disaster preparedness team member. These color codes act as a universal shorthand:

• Red (Immediate): These patients have life-threatening injuries but have a high probability of survival if they receive immediate medical intervention. They require rapid transport and critical care. Think of conditions like severe bleeding, compromised airways, or shock.
• Yellow (Delayed): Patients in this category have serious injuries that require medical attention but are not immediately life-threatening. They can wait for a few hours without significant risk of deterioration and can typically be transported after Red tag patients. Fractures without major bleeding or stable abdominal injuries often fall here.
• Green (Minor): These individuals, often referred to as “walking wounded,” have minor injuries that do not require immediate medical care. They can often self-extricate and may be directed to a designated safe area until medical personnel are available or transportation can be arranged. Abrasions, minor cuts, and psychological distress without physical injury are common examples.
• Black (Deceased/Expectant): This category is for patients who are either deceased or have injuries so severe that survival is unlikely, even with aggressive medical intervention. In an MCI, resources are limited, and these patients are triaged to receive palliative care or comfort measures if possible, but not life-saving efforts that could be used on Red or Yellow patients.

Triage color code in emergency: How It Works?

The START system streamlines the triage process using a simple algorithm that relies on three physiological assessments, easily remembered with the mnemonic RPM: Respirations, Perfusion, and Mental Status. This systematic evaluation allows responders to triage each victim in 60 seconds or less.

First, responders quickly move through the incident area, identifying and directing “walking wounded” to a safe area – these are your initial Green tags. Then, the detailed RPM assessment begins for non-ambulatory patients:

1. Respirations: Does the patient have spontaneous breathing? If not, reposition the airway. If breathing doesn’t start, the patient is tagged Black. If they breathe at a rate over 30 breaths per minute, they are tagged Red. If they breathe under 30 breaths per minute, proceed to Perfusion.
2. Perfusion: Check for a radial pulse (indicating adequate blood pressure) or capillary refill time (CRT) of less than 2 seconds. If there’s no radial pulse or CRT is greater than 2 seconds, the patient is tagged Red. If circulation is adequate, proceed to Mental Status.
3. Mental Status: Assess the patient’s ability to follow simple commands. If they cannot follow commands or are unconscious, they are tagged Red. If they can follow commands, they are tagged Yellow.

This organized, memorable method assists responders in quickly identifying the most critically injured, using limited resources effectively, and reducing decision fatigue under extreme pressure. The system’s effectiveness was notably demonstrated in major incidents like the 9/11 World Trade Center bombing and the 1995 Oklahoma City bombing, where it helped manage the overwhelming number of casualties.

What To Look For: Triage red tag examples

Knowing the specific criteria for each color tag helps ensure consistency and accuracy in the field. When you encounter these signs, you’re likely dealing with a high-priority patient:

• Red Tag (Immediate) Criteria:
  • Absent breathing after airway repositioning.
  • Respirations greater than 30 breaths per minute.
  • No radial pulse or capillary refill time greater than 2 seconds.
  • Unable to follow simple commands (e.g., “squeeze my hand”).
  • Severe active hemorrhage.
• Yellow Tag (Delayed) Criteria:
  • Respirations between 10-29 breaths per minute.
  • Normal radial pulse and capillary refill under 2 seconds.
  • Able to follow simple commands.
  • Significant burns without airway compromise.
  • Stable fractures (e.g., closed femur fracture).
  • Spinal injuries where vital signs are stable.
• Green Tag (Minor) Criteria:
  • Able to walk and follow commands.
  • Minor cuts, abrasions, or bruises.
  • Sprains or minor dislocations.
  • Psychological distress without significant physical injury.
• Black Tag (Deceased/Expectant) Criteria:
  • No spontaneous breathing after two attempts to open the airway.
  • Obvious signs of death (e.g., decapitation, rigor mortis).
  • Injuries incompatible with life given available resources.

Our experience with multiple California fire departments underscores that rapid, accurate tagging using these criteria is paramount. We develop START training cards and manuals specifically to reinforce these decision points for first responders.

Beyond the Basics: Nuance and Alternatives

While START provides a robust framework for adult casualties, mass-casualty incidents often involve victims of all ages. For pediatric patients, a modified system called JumpSTART is frequently used. This variant, also developed in the 1990s, adapts the RPM criteria to account for the unique physiological differences in children, ensuring appropriate triage for the youngest victims.

Moreover, while START is an exceptional tool for initial, field-level triage, it’s essential to recognize that it’s just the first step. As patients move through the continuum of care—from the incident site to transport, and then to medical facilities—triage is an ongoing process. Hospital-based triage systems like the Emergency Severity Index (ESI) or Canadian Triage and Acuity Scale (CTAS) provide more detailed assessments once patients arrive at a healthcare facility.

“No single triage system is a panacea for all scenarios. The key lies in selecting the right system for the right context—whether it’s START for initial field assessment or a more nuanced system for in-hospital care—and ensuring all responders are proficient in its application.”

— Mayo Clinic Emergency Medicine

Understanding these distinctions and knowing when to apply a different methodology is a hallmark of an experienced emergency services professional. It shows you’re not just following a protocol but truly grasping its purpose and limitations.

What to Expect: Clearer Outcomes in Chaos

Implementing the START triage system, backed by consistent training, translates directly into more organized and effective responses during an MCI. You can expect:

• Reduced Response Time: Rapid assessment allows for quicker prioritization and deployment of medical teams.
• Efficient Resource Allocation: Limited ambulances, personnel, and medical supplies are directed to those who will benefit most, maximizing positive outcomes.
• Minimized Decision Fatigue: The structured RPM algorithm gives responders a clear path, reducing stress and errors in high-pressure situations.
• Improved Patient Flow: Clear color tags facilitate smoother patient movement from the incident site to appropriate treatment areas and transport vehicles.
• Enhanced Communication: A universal color-coded language improves coordination among various agencies and responders on scene.

While no system can eliminate the inherent challenges of an MCI, START significantly mitigates the chaos. Regular drills and refreshers, as offered through our START training videos and instructor-led courses, reinforce the algorithm, ensuring that when every second counts, responders act with practiced precision.

Practical Tips for Effective Triage

For first responders, industrial safety teams, and emergency coordinators, mastering START triage means more than just memorizing colors. It requires practice and an understanding of the underlying principles. Here are some practical tips:

1. Practice Regularly: Conduct frequent drills and scenario-based training. The more you practice, the more intuitive the RPM assessment becomes under pressure.
2. Know Your Resources: Understand what medical and transport resources are available in your jurisdiction. This knowledge informs your triage decisions regarding transport priority.
3. Focus on Speed and Simplicity: Remember, START is about rapid assessment, not detailed diagnostics. Stick to the RPM algorithm. If you find yourself spending more than 60 seconds, reassess your approach.
4. Train with Your Team: Ensure all members of your response team are proficient in START. A common understanding prevents confusion and improves coordination.
5. Consider JumpSTART for Pediatrics: If your team may encounter pediatric casualties, ensure you’re also trained in the JumpSTART variant. Never apply adult criteria to children.
6. Utilize Triage Tags Effectively: Ensure patients are clearly tagged with the correct color. Triage tags are a critical communication tool for subsequent care providers.

The ability to quickly and accurately categorize victims in a mass-casualty incident is a critical skill for any first responder. The START system provides a battle-tested, consistent methodology that has proven its worth in countless real-world emergencies. By understanding its color codes and applying its principles, you empower yourself and your team to make the most impactful decisions when it matters most, ultimately saving lives. To learn more about equipping your team, explore the comprehensive resources available at START Triage.