Signal flares in Clark Huss rooms are the standardized communication markers that allow squads to coordinate without lengthy voice chat exchanges. While the game does not include literal flare items, the term refers to the system of flashlight patterns, audio cues, and callout vocabulary that veteran squads use to communicate across distance. New players rely entirely on voice chat, which is slow and prone to panic. Veterans use signal flares to convey complex information in under two seconds.
This guide covers the flashlight click patterns that serve as visual signals, the standardized callouts that serve as audio signals, and the emergency protocols that trigger squad-wide responses. You will also learn how to build a squad-specific signal flare system and the most common failures when signals are misused.
What Signal Flares Are
Signal flares are pre-agreed communication shortcuts that replace longer voice chat sentences. They work because both sender and receiver know the meaning in advance, which eliminates interpretation time.
Signal flare categories:
| Category | Medium | Range | Information Density |
|---|---|---|---|
| Flashlight patterns | Visual | 1 — 2 corridors | Low to medium |
| Audio callouts | Voice | Server-wide | High |
| Action signals | Movement | Adjacent corridors | Medium |
| Battery states | Implicit visual | Server-wide | Low |
The four categories combine to form a complete communication system. Most squads use a mix of all four.
Flashlight Pattern Signals
Flashlight patterns are sequences of clicks that carry pre-agreed meanings. The patterns are short because long sequences waste battery and time.
Standard flashlight patterns:
| Pattern | Meaning |
|---|---|
| Single click | Acknowledgment, "I see you" |
| Double click | Caution, "Stop and assess" |
| Triple click | Clark spotted, "Direction toward me" |
| Rapid clicks (5+) | Emergency, "Need help now" |
| One long hold | Safe corridor marked, "Come this way" |
| Off then on | Check-in, "Still alive?" |
These patterns work because the receiving squad recognizes them without needing voice chat. A single click is universally understood as acknowledgment. A triple click universally means Clark.
Audio Callout Signals
Audio callouts are the most information-dense signal flares because voice carries language. The challenge is keeping callouts brief enough to be fast during chases.
Standard callout vocabulary:
| Callout | Meaning |
|---|---|
| "Clark left" | Clark is to the left of the speaker |
| "Clark right" | Clark is to the right of the speaker |
| "Clark back" | Clark is behind the squad |
| "Clark front" | Clark is ahead of the squad |
| "Breathing close" | Clark audio tell within one corridor |
| "Heartbeat distant" | Clark audio tell two or more corridors away |
| "Chase" | Clark is in active pursuit, full sprint |
| "Clear" | No Clark audio tells in monitored area |
| "Dead end" | Corridor has no exit |
| "Door" | Locked door nearby |
| "Junction" | Approaching decision point |
| "Battery" | Battery state update needed |
| "Battery dead" | Flashlight depleted |
| "Safe corridor" | Marked corridor ahead, safe to enter |
The vocabulary is short, factual, and unambiguous. Deviating from the vocabulary creates confusion.
Action Signals
Action signals are movements that communicate without voice chat. They are useful when voice chat is unavailable or when the squad needs to communicate silently.
Standard action signals:
| Signal | Movement |
|---|---|
| Squad stop | Lead raises hand or stops moving |
| Squad advance | Lead resumes walking |
| Squad hide | All players crouch or freeze |
| Squad retreat | All players reverse direction |
| Form wedge | Players move into wedge formation |
| Buddy up | Players pair with nearest squadmate |
| Light off | Light manager clicks flashlight off |
| Light on | Light manager clicks flashlight on |
| Follow me | Lead moves and squad follows |
| Hold position | Lead stops and squad stops |
Action signals work best when the squad has practiced them in calm conditions. Under panic, the squad may forget the signals and revert to voice chat.
Emergency Protocols
Emergency protocols are signal flares that trigger specific squad responses. They bypass normal coordination rules because the situation is critical.
Emergency protocol triggers:
| Trigger | Signal | Squad Response |
|---|---|---|
| Squadmate down | "Man down, [direction]" | Nearest teammate moves to recover, others cover |
| Clark chase | "Chase, full sprint" | All players sprint, no flashlight, Lead navigates escape |
| Lost squadmate | "Separation, [direction]" | Squad pauses, calls out to separated player |
| Battery dead | "Battery dead, [player]" | Squad switches to audio-only mode |
| Ambush | "Ambush, [direction]" | Squad retreats immediately, no questions |
| Found exit | "Exit, [direction]" | Squad converges on exit, Lead confirms path |
The emergency protocols are memorized because they may be needed at any moment. The squad drills them during pre-game briefings.
Battery State Signals
Battery state is communicated implicitly through the flashlight bar visibility. Light managers use specific signals to convey their battery status without voice chat.
Battery state signals:
| Battery State | Signal |
|---|---|
| Above 70% | Normal click pattern, no indication needed |
| 50 — 70% | Light Manager calls "battery half" every minute |
| 25 — 50% | Light Manager switches to single clicks only |
| Below 25% | Light Manager calls "battery critical" |
| Below 10% | Light Manager calls "battery dying" |
| 0% | Flashlight clicks no longer register, audio-only |
The light manager's responsibility is to keep the squad informed about battery status. The squad uses this information to plan flashlight usage.
Building a Squad Signal System
Every squad should build a signal system that fits their playstyle. The standard signals above are a starting point, but squads often customize them.
Signal system customization options:
- Add squad-specific callouts for common situations in your server
- Use flashlight patterns that are easier for your squad to execute
- Assign color roles if your game version supports player colors
- Create audio signatures (specific phrases) for specific events
- Develop pre-emptive signals for upcoming decisions
The customization should be documented and rehearsed before the first run. Squads that customize without rehearsal forget the signals under pressure.
Signal Discipline Under Pressure
Signal discipline breaks under pressure, which is when the squad needs signals most. The discipline rules below prevent the breakdown.
Discipline rules:
- Signals only — no improvised voice chat during chases
- One signal at a time — multiple simultaneous signals create confusion
- Brief execution — signals must complete in under two seconds
- Universal vocabulary — deviations from standard signals are not allowed
- Calm execution — signals must be delivered in a calm voice
If a squadmate deviates from signal discipline, the Light Manager should redirect them with a factual callout: "Use signals only."
Common Signal Failures
These failures show up consistently when squads misuse signals. Identifying them helps prevent them.
Failure 1: Improvised Voice Chat. A squadmate uses full sentences instead of standard callouts during a chase. The sentence takes five seconds, and the squad loses five seconds of response time.
Failure 2: Multiple Simultaneous Signals. Two squadmates signal at the same time. The squad cannot determine which signal takes priority, and response delays.
Failure 3: Inconsistent Vocabulary. Squadmates use different words for the same concept ("chase" vs "running" vs "go go go"). The squad wastes time interpreting which word is correct.
Failure 4: Forgotten Signals Under Pressure. Squadmates forget the signal vocabulary during a chase and revert to emotional reactions. The signals fail because they require memorization.
Failure 5: Signal Spam. A squadmate clicks flashlight rapidly or repeats callouts, creating noise that hides Clark audio tells. Signal discipline is strict about frequency.
Training Signal Execution
Signal execution requires practice because the patterns must be delivered quickly and accurately. Training exercises below build the muscle memory.
Exercise 1: Flashlight Pattern Drill. In an empty lobby, practice each flashlight pattern ten times. Build muscle memory so the patterns execute without conscious thought.
Exercise 2: Callout Speed Drill. Time yourself delivering each standard callout. Target delivery time is under one second per callout.
Exercise 3: Signal Recognition Drill. Have a squadmate signal randomly. You identify the signal within one second. Repeat with all standard signals.
Exercise 4: Chase Simulation. Run a normal session, but every time Clark audio tells appear, the squad switches to signal-only communication. This builds signal use under pressure.
Exercise 5: Emergency Protocol Drill. Have the squad practice each emergency protocol at least once per session. Memorization requires repetition.
Signal Flares in Solo Play
Solo play does not benefit from squad signals, but solo players can use self-signals to maintain discipline. Self-signals are patterns the player executes alone for self-regulation.
Solo self-signals:
| Signal | Self-Regulation Use |
|---|---|
| Single click at every junction | Maintains flashlight discipline |
| Footstep count | Maintains controlled pace |
| Stamina check at every turn | Maintains awareness of resources |
| Battery check at every minute | Maintains battery management |
Solo players benefit from these signals because they enforce discipline even without squad accountability.
Frequently Asked Questions
Do signal flares work with random public players?
Rarely. Random players do not know your squad's signal system. Signal flares work best with consistent squadmates who have rehearsed the vocabulary.
Should I customize the standard signal vocabulary?
Yes, but only after your squad has mastered the standard vocabulary. Customization adds complexity, and the standard vocabulary is sufficient for most situations.
How many signals should a squad memorize?
The standard vocabulary has about fifteen signals. Add five to ten squad-specific signals, and your total is twenty to twenty-five signals. Beyond that, the system becomes too complex to remember under pressure.
What is the most important signal?
The "Chase" signal is the most important because it triggers the most critical squad response. Every squad member must execute it instantly when Rear Guard calls it.
Can signal flares replace voice chat entirely?
In well-rehearsed squads, yes. The signal system covers all common scenarios. Voice chat is reserved for unusual situations that signals cannot address.
For more on the squad roles that execute signals, see our co-op survival guide. To learn the escape tactics that signal flares enable, read escaping Clark.
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