Indiana blue light law reserves blue vehicle lights for police and, in one narrow exception, volunteer firefighters with a written permit. Put blue lights on any other vehicle and you have committed a Class C misdemeanor, punishable by up to 60 days in jail and a $500 fine. Use those lights to act like a police officer and the charge jumps to a Level 6 felony with potential prison time.
Who Can Legally Display Blue Lights in Indiana
Police vehicles are the primary users. Under Indiana Code 9-19-14-5, an authorized police vehicle must carry signal lamps capable of showing both a red and a blue beam, visible 180 degrees around the front of the vehicle. The red-and-blue combination is what identifies a police car on Indiana roads.1Indiana General Assembly. Indiana Code 9-19-14-5 – Police Vehicle Lighting
Fire trucks and ambulances do not use blue. Indiana classifies them as authorized emergency vehicles, but their signal lamps must show flashing, rotating, or oscillating red or red-and-white light.2Indiana General Assembly. Indiana Code 9-19-14-2 – Signal Lamps Visibility The blue beam belongs to law enforcement.
The Volunteer Firefighter Exception
The one meaningful exception is in Indiana Code 36-8-12-11, which lets members of volunteer fire departments display blue lights on their personal vehicles when responding to an emergency scene or driving to the station in the line of duty.3Indiana General Assembly. Indiana Code Title 36 Code 36-8-12-11 – Volunteer Firefighter Blue Lights
A permit is required, and it comes from the volunteer’s own fire chief, not a state agency. The firefighter has to carry that written permit any time the blue light is illuminated. If someone else is driving the vehicle, the light has to stay off.
The equipment rules are specific. No more than four blue light assemblies on a vehicle. Each must be a flashing or revolving type, at least 35 watts or LED, and mounted on the roof, the dashboard (shielded), or the front bumper. Blue lights cannot be wired into the regular headlamps, and rear-facing strobes must be red rather than blue.3Indiana General Assembly. Indiana Code Title 36 Code 36-8-12-11 – Volunteer Firefighter Blue Lights
What a Volunteer’s Blue Light Does Not Mean
This is where drivers and new volunteers both tend to misunderstand the law. A volunteer firefighter displaying a blue light under IC 36-8-12-11 is not driving an authorized emergency vehicle. The statute says so directly. The light grants no right-of-way and does not exempt the driver from any traffic rule. Speed limits, stop signs, red lights, lane markings: all of them still apply, even on the way to a fire.3Indiana General Assembly. Indiana Code Title 36 Code 36-8-12-11 – Volunteer Firefighter Blue Lights
Other drivers have no legal duty to yield. The blue light functions as a courtesy signal asking for room, nothing more.
You Can’t Keep the Light Bar on an Ex-Police Car
Indiana Code 9-19-14-5.5 bans red-and-blue or red-and-white lamps on any vehicle that is not a police vehicle or another authorized emergency vehicle. The statute goes further: if you acquire a vehicle that already has that equipment and you are not authorized to use it, you have to remove the lamps.4Indiana General Assembly. Indiana Code 9-19-14-5.5 – Red and White, Red and Blue, Red, or Amber Lights Violation
Buying a decommissioned cruiser at auction is common. Leaving the light bar in place is not legal, even if you never switch it on. The violation is in the equipment, not just the use.
Penalties for Unauthorized Use
The consequences depend on which statute applies and whether the lights were used to deceive anyone.
Non-Authorized Vehicles With Red-and-Blue Lights
Failing to remove red-and-blue lamps from a vehicle that isn’t entitled to them is a Class C misdemeanor under IC 9-19-14-5.5(d). That carries up to 60 days in jail and a fine of up to $500.4Indiana General Assembly. Indiana Code 9-19-14-5.5 – Red and White, Red and Blue, Red, or Amber Lights Violation A narrow carve-out exists for vehicles carrying lighting required by federal Department of Transportation regulations.
Volunteer Firefighter Rule Violations
Breaking the volunteer blue-light rules in IC 36-8-12-11 is a Class C infraction, which means a fine but no jail. If the person breaking the rule is a volunteer firefighter, the fire chief is also required to impose discipline under department rules. The same infraction applies to a non-member who illuminates a blue light, because the statute separately bars anyone outside a volunteer fire department from doing so.3Indiana General Assembly. Indiana Code Title 36 Code 36-8-12-11 – Volunteer Firefighter Blue Lights
When It Becomes a Felony
The real exposure comes from Indiana Code 35-44.1-2-6, which makes it a Level 6 felony to falsely represent yourself as a law enforcement officer with the intent to deceive or to induce someone to comply with your instructions. A Level 6 felony carries six months to two and a half years of incarceration.5Indiana General Assembly. Indiana Code 35-44.1-2-6 – Impersonation of a Public Servant
Using blue lights to pull a driver over, or to direct traffic as if you had police authority, moves the case out of lighting violations and into criminal impersonation. There is no requirement that the defendant wore a uniform or showed a badge. Police-style lighting used to make someone comply is enough to support the charge.
Funeral Procession Carve-Out
Vehicles taking part in a funeral procession can display red-and-blue or red-and-white lamps without violating IC 9-19-14-5.5. Funeral escort vehicles bearing the markings described in IC 9-21-13-0.7 are also exempt from the general ban, but an escort vehicle that is not itself an authorized emergency vehicle may show only red-and-white, red, or amber light, not blue.4Indiana General Assembly. Indiana Code 9-19-14-5.5 – Red and White, Red and Blue, Red, or Amber Lights Violation
What to Do When You See Blue Lights
Flashing red-and-blue lights behind you mean an authorized emergency vehicle, almost always a police car. You are legally required to yield and pull over.
A single blue light on what looks like a personal vehicle is almost certainly a volunteer firefighter heading to a call. You are not legally required to yield, because that light carries no right-of-way under Indiana law.3Indiana General Assembly. Indiana Code Title 36 Code 36-8-12-11 – Volunteer Firefighter Blue Lights Giving them room when you safely can is a courtesy. The volunteer behind you cannot legally speed, run a red light, or pass illegally, so a little space helps everyone.
The short version: red-and-blue on a marked vehicle means pull over. Blue only, on a personal vehicle, means a volunteer is on a call and the road rules have not changed for either of you.