Understand the DOT 150 air mile radius HOS exemption for commercial drivers. Learn who qualifies, how to map your radius, and stay compliant with FMCSA rules.
If you drive a commercial motor vehicle (CMV) for a living, the Hours of Service (HOS) regulations from the Federal Motor Carrier Safety Administration (FMCSA) govern nearly every minute of your workday. But there is a significant exemption that many drivers and fleet managers either do not fully understand or fail to take advantage of: the 150 air mile radius short-haul exemption.
This guide breaks down exactly what the 150 air mile radius exemption is, who qualifies, how to determine whether your operations fall within the boundary, and how to map your 150 air mile radius to ensure compliance. Whether you are a driver, dispatcher, or fleet safety manager, understanding this exemption can simplify your compliance obligations and reduce administrative burden.
The 150 air mile radius exemption is a provision within the FMCSA Hours of Service regulations (49 CFR Part 395.1(e)(1)) that allows certain commercial drivers to operate without maintaining a detailed Record of Duty Status (RODS), commonly known as a daily log or electronic logging device (ELD) record.
Under this exemption, qualifying drivers are not required to use an ELD or fill out paper logs. Instead, they need only maintain time records showing their start time, end time, and total hours on duty for each day.
The critical requirement: the driver must operate within a 150 air mile radius of their normal work reporting location and return to that location at the end of each shift.
This is the single most important distinction in the regulation, and it trips up a surprising number of people.
An air mile (also called a nautical mile) is not the same as a statute mile (the standard mile used on road signs and odometers):
| Unit | Length | Conversion |
|---|---|---|
| 1 statute mile | 5,280 feet | 1.0 statute miles |
| 1 air mile (nautical mile) | 6,076 feet | 1.15 statute miles |
| 150 air miles | 911,400 feet | 172.6 statute miles |
So 150 air miles equals approximately 172.6 statute miles. This is measured as a straight line from your work reporting location to the farthest point you travel, not along the road. The "as the crow flies" distance is what matters, not the odometer reading.
This distinction works in the driver's favor. You can drive well over 172.6 road miles and still be within the 150 air mile radius, as long as the straight-line distance from your reporting location to your farthest point does not exceed 172.6 statute miles (150 nautical miles).
The 150 air mile radius is just one of several conditions that must all be met for the exemption to apply. Here is the complete list under 49 CFR 395.1(e)(1):
Non-CDL short-haul drivers operating within 150 air miles have a slightly different set of requirements under 49 CFR 395.1(e)(2):
The key difference: the non-CDL provision allows 14 hours on duty with 11 hours of driving, similar to the CDL provision, but the time record requirements are simpler.
The exemption is designed for short-haul drivers who start and end their workday at the same location and do not travel far from that base. Common examples include:
The exemption does not apply to:
This is where most confusion arises. The regulation specifies air miles measured in a straight line, but your routes follow roads. Here is how to determine whether your operations fall within the boundary.
The simplest and most reliable method is to use a mapping tool that can draw a radius circle of 172.6 statute miles (150 air miles) around your reporting location. RadiusMapper.com allows you to generate a precise radius circle from any address, which gives you a clear visual boundary.
Here is the process:
Because this is a straight-line measurement (not a drive-time calculation), a simple radius circle is actually the correct tool here, unlike most delivery or service area applications where drive-time maps are more appropriate.
That said, you may also want to generate a driving radius map to understand how far you can actually travel on roads within that 150 air mile boundary. The air mile circle defines your legal limit; the drive-time map shows your practical operating area within that limit.
If you need to check a specific destination, you can calculate the straight-line distance using coordinates:
This method is precise but impractical for checking many locations. A map-based approach is better for day-to-day use.
Google Maps can measure straight-line distance using its measuring tool:
This works for spot-checking individual destinations but is not ideal for visualizing your entire boundary at once. A dedicated 150 air mile radius map gives you the complete picture.
Let us walk through creating a usable 150 air mile radius map for your fleet operations.
If your fleet operates from one yard, terminal, or office:
Overlay your regular delivery stops, job sites, or route destinations on this map. If any fall outside the circle, those trips do not qualify for the exemption, and the driver must use an ELD or maintain paper logs for those days.
If your fleet operates from several terminals or yards:
Important: the radius is measured from the driver's normal work reporting location, not from the company's headquarters or from wherever the driver happens to start that day. If a driver regularly reports to a specific terminal, that terminal is the center of their 150 air mile radius.
What if a driver occasionally exceeds 150 air miles?
The exemption applies on a day-by-day basis. If a driver operates within 150 air miles on Monday through Thursday, they are exempt those days. If they exceed the boundary on Friday, they must maintain a full RODS (ELD or paper log) for Friday. They return to exempt status on Monday if they are back within the boundary.
However, there is a practical complication. If a driver is expected to regularly exceed the boundary, the carrier should equip the driver with an ELD and have them log all days. Switching between exempt and non-exempt status creates compliance confusion and audit risk.
What about the 14-hour window?
Even if a driver stays within 150 air miles, they lose the exemption for that day if they do not return to their reporting location and get released from duty within 14 consecutive hours. A driver who reports at 6:00 AM must be released by 8:00 PM. If they are still on duty at 8:01 PM, the exemption does not apply for that day, and they need a full log.
What if traffic delays cause a driver to exceed the 14-hour window?
This is one of the real-world challenges of the exemption. A driver who normally completes their route in 12 hours might hit unexpected traffic or a breakdown that pushes them past 14 hours. In that case, the driver is technically non-exempt for that day and should have had a logging device.
The FMCSA has acknowledged that occasional, unforeseeable exceedances happen. However, if your routes routinely push close to the 14-hour limit, you should either equip drivers with ELDs as a precaution or adjust routes to provide more buffer.
The ELD mandate (effective December 2017, with full enforcement from December 2019) requires most CMV drivers to use electronic logging devices. The 150 air mile radius exemption is one of the few exceptions.
Even though exempt drivers do not need an ELD, they are not free from all documentation requirements:
If a driver operating under the 150 air mile exemption is stopped for a roadside inspection, the inspector will ask for documentation. The driver should have:
A 150 air mile radius map printed or saved on a phone or tablet is excellent supporting documentation. It visually demonstrates that the driver's route falls within the exemption boundary. Some fleet managers provide each driver with a laminated map showing their specific 150 air mile radius.
The FMCSA regulations include two different short-haul exemptions that are often confused:
| Feature | 100 Air Mile Radius | 150 Air Mile Radius |
|---|---|---|
| Regulation | 49 CFR 395.1(e)(2) | 49 CFR 395.1(e)(1) |
| Radius | 100 air miles (115.1 statute miles) | 150 air miles (172.6 statute miles) |
| On-duty window | 14 hours | 14 hours |
| Maximum driving | 11 hours | 11 hours |
| Off-duty requirement | 10 consecutive hours | 10 consecutive hours |
| ELD exempt? | Yes | Yes |
| Applies to | Non-CDL short-haul drivers | CDL and non-CDL drivers |
| HazMat vehicles | May apply | Does not apply (100 air mile limit for HazMat) |
The 100 air mile radius exemption is specifically referenced in the ELD mandate rule as an exemption category. The 150 air mile exemption is the broader short-haul exemption that predates the ELD mandate. Both are valid, but the 150 air mile version provides more geographic flexibility.
For drivers carrying hazardous materials requiring placards, only the 100 air mile radius applies. If your fleet handles HazMat loads, map a 115.1 statute mile radius instead of 172.6.
While the FMCSA regulations are federal, some states have additional requirements or interpretations that affect the 150 air mile exemption:
Always verify your state's specific requirements in addition to federal FMCSA regulations.
Do not assume your drivers qualify. For each driver and route, document:
Keep this documentation in the driver's qualification file and update it when routes change.
Drivers operating under the exemption should understand:
Even though exempt drivers do not need ELDs, GPS tracking can provide an additional compliance safety net. GPS data can:
Not every day goes as planned. Have a procedure for when a driver who normally operates under the exemption needs to exceed the 150 air mile boundary or the 14-hour window:
Having portable ELD-capable devices available (even just a smartphone app) gives your exempt drivers a fallback for exception days.
RadiusMapper.com provides several features useful for HOS compliance mapping:
Generate a circle of exactly 172.6 statute miles from any address to visualize your 150 air mile boundary. This is the most straightforward application and the one most fleet managers need.
If you have multiple terminals, generate a radius for each one and view them together to understand your fleet's total exempt operating area.
While the 150 air mile rule is based on straight-line distance, understanding actual drive times within that boundary helps with scheduling. Generate a driving radius map to see how far your drivers can realistically travel on roads within the 150 air mile circle. This helps you plan routes that stay within both the distance limit and the 14-hour time limit.
You can also use the service area map feature to model your fleet's coverage area and share it with dispatchers and customers.
For larger fleets, the developer API allows you to programmatically check whether a destination falls within 150 air miles of a reporting location. This can be integrated into your dispatch or TMS system to flag loads that would take a driver outside their exemption boundary.
The 150 air mile radius is measured from your normal work reporting location, which is typically the terminal, yard, or office where you report for duty at the start of your shift. It is not measured from your home unless your home is your official reporting location (as might be the case for some owner-operators who start their day from home).
Yes. The exemption applies to interstate commerce. As long as you meet all the requirements (within 150 air miles, return to reporting location, within 14 hours, etc.), crossing a state line does not disqualify you. However, you must comply with any additional state-specific regulations in the states you operate in.
If you exceed the boundary, the exemption does not apply for that day. Technically, you should have been maintaining a full Record of Duty Status (RODS) for the entire day. In practice, if you discover mid-route that you will exceed the boundary, begin logging immediately and maintain records for the rest of the day. Repeated violations can result in fines during an audit.
There is no specific regulatory requirement to carry a map. However, having a 150 air mile radius map available (printed or digital) is strongly recommended. During a roadside inspection, it provides immediate visual evidence that your current position is within the exemption boundary. Many fleet safety managers consider it a best practice and include it in the driver's documentation packet.
No. The 150 air mile radius exemption under 49 CFR 395.1(e)(1) applies to property-carrying CMVs. Passenger-carrying vehicles have separate short-haul provisions under 49 CFR 395.1(e)(2) with a 150 air mile radius but different hour limits. Specifically, passenger carrier short-haul drivers have a maximum of 10 hours driving within a 15-hour on-duty window, compared to 11 hours driving within a 14-hour window for property carriers. Always verify the specific provision that applies to your vehicle type.
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