Firefighters respond to a wide range of emergencies across every type of environment and the equipment they use must be able to meet the demands of each situation.

Serving a vast array of communities, including urban, rural and airport settings, firefighters use different types of fire apparatus—all with unique configurations and attributes to complete the scenarios faced each day.

This blog walks through several key differences between municipal and airport fire trucks.

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Types of Calls

The most obvious difference between municipal fire apparatus and aircraft rescue and firefighting (ARFF) vehicles are the types of emergency calls that they respond to.

Municipal Fire Service Calls

Municipal fire trucks are the most recognizable emergency firefighting vehicles. The type of fire apparatus a department needs is determined by the mission of the truck and the community it serves each day.

• Urban fire apparatus: Fire departments in urban areas may respond to emergencies on city streets that are narrow and require apparatus with superior maneuverability to navigate tight turns and corners. Oftentimes, fire stations in urban areas are historic with confined spaces, requiring more compact apparatus that will fit in the building while still providing modern firefighting capabilities.
• Suburban fire apparatus: As growth occurs outside of cities with the expansion of commercial and residential communities, fire departments need to keep a pulse of the continual progression of land use and building types to match services and apparatus accordingly.
• Rural fire apparatus: Rural firefighters may respond to a large number of motor vehicle accidents, particularly on remote roads, requiring ample compartmentation for first-aid and extraction equipment. Rural fire apparatus generally require larger water tanks to meet limited water supply events and for allowing times for greater distance in response time to building fires from other departments. Additionally, rural apparatus may be called to grass or marsh fires which require off-road capabilities.

The ability to arrive at an emergency or fire scene quickly is a critical attribute of a municipal fire truck. The National Fire Protection Association (NFPA) requires municipal fire trucks must be able to accelerate from 0 to 35 miles per hour in 25 seconds and reach a top speed of at least 50 miles per hour.

ARFF Service Calls

While both ARFF vehicles and municipal fire trucks are equipped with a variety of tools to help them respond to emergencies, ARFF vehicles have a specialized design and some unique attributes specific for use in an airport environment. ARFF vehicles respond to many types of calls, including airplane crash scenes, other airplane emergencies such as wheel or brake fires, medical or fire emergencies at the terminal, ground support for fuel spills, or off-airport response for events like car fires in the parking garage and foam for municipal calls.

ARFF crews are faced with harsh conditions and hazardous scenes, including exposure to toxic fumes and chemicals, explosion risks, debris and more. Adding to the complexity of these demands is the fact that most of the world’s airports have a vastly different footprint, yet responders are required to arrive at a scene, whether on or off road, in three minutes or less at any time of the day.

The NFPA sets a higher standard for acceleration for ARFF vehicles. This is due in part to the critical nature of reaching a scene before a fire gets to an aircraft’s tanks where extremely flammable jet fuel is stored. ARFF vehicles are required to have the capability to accelerate from 0 to 50 miles per hour in 25 seconds or less and reach a top speed of at least 70 miles per hour. Often, the ARFF vehicle’s response time is aided by the relatively short distances needed to travel in an enclosed airport environment.

Known as the most capable ARFF vehicle ever built and custom-engineered to deliver rapid response, Oshkosh Airport Products’ Striker® 8x8 reaches 50 mph (80 kph) in less than 20 seconds with fewer emissions while exceeding NFPA, ICAO and EU standards.

Water Supply

Water is the most common and recognizable method of suppressing fires. Both municipal and airport fire trucks use water to fight fires, but the trucks are often equipped with vastly different amounts of water. 

Municipal Fire Truck Water Supply

Fire departments strategically design fleet vehicles to match the needs of a community. As such, you may find some apparatus with ample water supply and some with none at all. It often depends on water infrastructure and fleet management.

Typically, municipal fire trucks have one of the following water tank sizes:

• 500-gallon
• 750-gallon
• -gallon

When fire hydrant infrastructure is established, fire trucks can carry less water or no water, leaving more room for personnel, tools and equipment. In rural departments where water infrastructure may be scarce, firefighters must transport and use water strategically, and fire trucks often have larger water tanks. 

ARFF Truck Water Supply

ARFF vehicles typically have limited access to water supply from fire hydrants, meaning water must be carried by the truck.

Oshkosh Airport ARFF trucks offer the following water tank sizes:

• -gallon
• -gallon
• -gallon

The Federal Aviation Administration (FAA) classifies ARFF trucks by five categories—classes one through five. These classifications segregate vehicles by what types of fire suppression agent and how much of the agents are carried on a vehicle. ARFF trucks must carry all agents onboard with them since there is often little or no access to fire hydrant infrastructure, particularly in more remote areas of the airfield.

One of the most notable differences between a municipal and ARFF vehicle is the method of water delivery. ARFF vehicles are equipped with a high reach extendable turret (HRET), which has the ability to pierce an aircraft fuselage and spray water or a suppressing agent to knock down the fire. A HRET also allows firefighters to accurately and easily put water and secondary agent onto fires from high attack and low attack angles, effectively accessing difficult-to-reach aircraft areas.

Fire Suppression Systems

The goal of every fire apparatus is to suppress fires and save lives. But, the type of fire suppression differs depending on the type of truck, the type of fire and the environment in which the fire suppression system is used.

Municipal Fire Truck Suppression Systems

Each fire department has established standard operating and response procedures for emergency calls. Strategic deployment of aid depends on the types of call, the requirements of the emergency, and the available response team, apparatus and equipment.

In addition to water, fire trucks can also feature firefighting foam systems designed to improve the fire-extinguishing capabilities of water, enhancing on-scene efficiencies and promoting water use reduction. Foam systems provide versatility and improved efficiency in the battle against dangerous fires.

Learn more about firefighting foam systems here: Fire-Fighting Foam: What It Is and Why Fire Departments Need It

ARFF Vehicle Fire Suppression Systems

In an ARFF emergency scenario, advanced fire suppression technologies and fire suppression agent conservation are critical.

There are three primary fire suppressants an ARFF truck can carry:

• Water is often used to provide initial attack response.
• Firefighting foam is mixed with water used for fuel spills because it coats surfaces and suppresses the fire by cutting off its oxygen supply.
• Dry chemicals are used only when absolutely necessary because the fine particulates spread easily and require thorough cleanup.

The highly flammable nature of aviation fuel requires an expedited response to ensure the safe evacuation of an airplane’s occupants. The different agents are selected based on the type of response required for each emergency.

View a full explanation of the Federal Aviation Administration’s ARFF vehicle classifications, water and firefighting agent requirements and vehicle examples here.

Compartmentation and Storage

Compartmentation is a critical factor on any emergency response vehicle, but how it’s configured on an emergency response vehicle depends on many factors. One important commonality between the two types of trucks is the inclusion of storage solutions to help reduce fire personnel's exposure to carcinogens. The Carcinogen Awareness & Reduction to Exposure (CARE) initiative is a partnership between Pierce Manufacturing and the Firefighter Cancer Support Network. Each fire department determines what the CARE initiative means to them and how they’d like to include some of the goals of CARE into their truck design and daily operations.

Municipal Fire Truck Storage

Balancing the function of the fire apparatus with the storage required is critical. Municipal departments must follow specific requirements to meet the needs of established standards and operating procedures while also considering the primary use of the apparatus.

Municipal fire trucks often carry a combination of tools and equipment, including:

• Hose and hose appliances.
• Extra air packs.
• Smoke clearing devices.
• Small tools, including a pickhead axe, a pike pole and a hydrant wrench.
• Emergency medical supplies.
• Hydraulic rescue tools.
• Ground ladders.

Learn more in this helpful blog: Fire Truck Storage: Compartment and Storage Systems FAQ

ARFF Vehicle Storage

Like municipal fire trucks, ARFF vehicle storage compartments can be customized to meet the airport requirements and standard operating procedures.

Want more information on Municipal Emergency Truck? Feel free to contact us.

ARFF fire trucks typically carry the following equipment and gear:

• Towing device.
• Communication equipment, including items like a radio with a public address system, microphone, speakers and antenna.
• Rescue and access tools, including axes, cable cutters, crowbars and sledgehammers.
• Fuel line plugs.
• Pliers, wrenches, screwdrivers and other small tools.
• Hydraulic rescue tool with cutters, spreaders or combination tools.
• Vehicle medical kit with first aid items, including bandages, trauma dressings, stethoscope and cold packs. 

Each department determines the vehicle’s mission and configures the compartmentation accordingly to ensure optimal support in the field. 

Cab

Perhaps the most significant difference between municipal and ARFF fire trucks can be seen in the cab itself. 

Municipal Fire Truck Cab

A municipal fire truck cab can have many functions, but in many communities, the cab is designed to carry firefighters to the scene.

Cabs can vary in size and configuration, but all municipal cabs for North America feature traditional left-hand seating. Depending on the chassis and design specification, Pierce’s custom cabs can seat as many as 10 firefighters.

In recent years, many municipal departments have focused on the CARE initiative and having easy-to-clean cab surfaces and seating options.

All Pierce custom apparatus are designed to offer exceptional handling and maneuverability, easy-access service points and a high level of performance. In the design and specification process, fire departments can also include several added features to the cab, including:

• Side and front airbags to help protect firefighters in the event of an accident.
• Barrier or full-height cab doors.
• Ergonomic elements to reduce stress on firefighters’ bodies as they travel in the vehicle.
• HAAS Alert collision avoidance technology helps to ensure motorists are alerted to nearby emergency vehicles.
• Wrap-around dash with panoramic visibility.
• Automatic stair steps that provide a safe forward entry and exit from the cab.

Compare chassis and cab features here or learn more about the clean cab initiative in this recent blog post. 

ARFF Vehicle Cab

In contrast to a municipal cab, ARFF cabs have a very unique look. A larger operator area with more glass area for increased visibility is required to be able to maneuver the truck through a scene with obstacles such as passengers, other firefighters and debris. Most ARFF vehicles feature a slanted body with a front bumper designed for moving through ditches and rough terrain.

ARFF vehicles are often larger than municipal fire trucks because ARFF vehicles do not need to navigate the confines of a city street. Moreover, ARFF trucks are built for off-road driving, with large, wide tires and a long travel suspension.

While ARFF trucks can carry up to five firefighters in the cab, most are set up to allow the vehicle to operate with only the driver. The operator's seat is often centered in the cab and the operator is able to engage all truck functions from this position.

Premium ARFF trucks include many of the following features:

• Pump and roll operations.
• An extendable boom to attack fires from every angle with precision.
• Modular cab design with ergonomic control placement.
• Spacious cab seating for up to 5 firefighters.
• Increased forward and side visibility.
• Optional bus-style doors.

ARFF Trucks vs. Municipal Trucks – Why Are Airport Fire Trucks Different?

Firefighters respond to emergencies in a wide variety of environments which require the proper type of equipment to safely and effectively get the job done. Airports are a particularly unique environment and utilize specialized Aircraft Rescue and Firefighting trucks, or ARFF trucks, that are designed to handle emergencies involving airplanes.

You may have seen an airport fire truck operating on the tarmac while boarding a flight and noticed how different it looked compared to the fire trucks you see in your community. Below, we explore the key differences between ARFF trucks and municipal fire trucks, explaining how ARFF trucks are purpose-built to meet the unique demands of their environment.          

Safety Green Color

A key difference between ARFF trucks and municipal fire trucks is the bright safety green color of ARFF trucks. This distinctive color isn’t just for appearance; the Federal Aviation Administration (FAA) mandates safety green to make ARFF trucks easily visible to pilots and ground crews, especially in conditions of low visibility, such as fog, rain or nighttime on an airport runway.

Municipal fire trucks, on the other hand, are typically red and designed with a focus on maneuverability for paved roads.

Water Supply

Airport fire trucks typically have far more limited access to nearby water supplies from fire hydrants than municipal trucks do, which means they have to carry their water supply with the vehicle. For example, the Oshkosh Striker® 8x8 can carry up to 4,500 gallons of water at a time. Because of the added weight from the additional water, an airport fire truck has a much larger and wider wheelbase than municipal trucks.

Municipal trucks can also carry water with them, with tank options available in a variety of different sizes based on the type of apparatus and a community’s needs. For comparison, Pierce fire apparatus water tanks vary greatly in size and the level of customization available depending on if the vehicle is a pumper, aerial, tanker or other type of truck. One differentiation for municipal fire trucks and ARFF fire trucks is in many locations, communities make hydrants available for municipal trucks to connect to and access a greater water supply.

Fire Suppression

In addition to water, both ARFF and municipal fire trucks have the ability to carry additional firefighting agents on board. But airport fire trucks must be able to carry a greater variety of agents than municipal trucks because of the nature of the fires they encounter. Aircraft fires can spread very quickly and burn more intensely with the type of fuel carried on board. It’s extremely important to neutralize an aircraft fire as quickly as possible.

Types of Fire Suppressants

There are three primary fire suppressants an ARFF truck can carry:

• Water
• Firefighting Foam
• Dry Chemicals

Firefighting foam is mixed with water and often used for fuel spills because it coats surfaces and suppresses the fire by cutting off its oxygen supply. Additionally, there are numerous types of dry chemicals which can be used in different situations including the suppression of chemical and electrical fires. Dry chemicals are frequently used in industrial settings, where chemical and electrical fires are at a high risk. Dry chemicals are only used when needed due to the fine particulates which spread easily over a large area and require thorough cleanup.

Pump-and-Roll Capability

A unique feature of ARFF trucks is their pump-and-roll capability, which allows them to spray water or foam while moving. This is essential for spreading agents quickly over large areas like airport runways. While some wildland and wildfire response vehicles also have a pump-and-roll capability, it’s generally not included on municipal fire trucks, as they are usually stationary during firefighting operations.

The Oshkosh Snozzle® High Reach Extendable Turret

An airport fire truck also has the option for nozzles to be mounted on the exterior of the vehicle and on a boom which allows for fire suppressant attack from many angles, including in the air, on the ground, and far below grade. The Oshkosh Snozzle® High Reach Extendable Turret can be operated from inside of the cab and is an incredibly beneficial feature. The Snozzle HRET reduces, or even eliminates, the need for hoses which take time to set up on scene and may require firefighters to get too close to the fire. It can also penetrate the outside of an aircraft from 50 or 65 feet to deploy fire suppressants directly inside the aircraft and release up to 250 gallons of water per minute.

Municipal fire trucks can also be equipped with the Snozzle HRET, using the piercing tip to penetrate a structure. Fire departments can decide to use a nozzle only version of the feature to give firefighters an elevated water source to attack a fire.

How Fast Can Airport Fire Trucks Go?

The NFPA (National Fire Protection Association) sets standards for both ARFF trucks and municipal fire trucks. The acceleration requirements are more aggressive for the airport fire trucks because it is critical to arrive at the aircraft before the fire reaches the fuel tanks, where extremely flammable jet fuel is stored.

Airport fire trucks are required to be able to accelerate from 0 to 50 miles per hour in 25 seconds or less and reach a top speed of at least 70 miles per hour, a requirement both the Oshkosh® Striker® ARFF and the Oshkosh® Striker® Volterra ARFF met. Municipal trucks, on the other hand, must be able to accelerate from 0 to 35 miles per hour in 25 seconds and reach a top speed of at least 50 miles per hour.

Difference in Operating Environments and Body Structure

The body of an airport fire truck     is     designed to be       better suited for off-road driving than a municipal truck     . This construction helps ARFF trucks meet FAA guidelines for off-road performance and maneuverability, ensuring they can reach emergencies quickly, regardless of terrain. They will often have special off-road tires and a suspension system built for rougher, off-road terrain which may exist on or near an airport. The Oshkosh Striker ARFF truck comes standard with the Oshkosh TAK-4™all-wheel independent suspension, which is critical when trying to reach a plane which has landed off the paved runway.

Municipal fire trucks will most often operate on paved surfaces including local streets and freeways. Some fire trucks in suburban and rural areas may include off-road capabilities. Municipal fire departments can also choose the TAK-4 Independent Suspension or TAK-4 T3 Independent Rear Suspension with tight turning technology, for improved ride quality and to match the needs of their service area.

The ultimate goal of airport and municipal firefighters is the same; to extinguish fires, mitigate damage, and above all, save lives. ARFF trucks provide customized capabilities for the unique airport environments they operate in.

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