Troop G Motor Carrier Enforcement FAQs
Frequently asked questions about motor carrier enforcement.
When do the federal commercial vehicles apply?
When a vehicle is used in the furtherance of a commercial enterprise. These vehicles are used on a highway or in interstate or intrastate commerce:
- To transport passengers or property that have a gross vehicle rating, gross weight or gross combination weight in excess of 10,000 pounds.
- To transport 16 or more passengers, including the driver, for compensation.
- To transport hazardous materials in a quantity requiring placarding.
Are commercial vehicles required to be marked?
Yes, every self-propelled commercial vehicle must be marked and display the following:
- The legal name or single trade of the motor carrier operating the commercial vehicle.
- If interstate, the USDOT number issued by the Federal Motor Carrier Safety Administration (FMCSA).
- Markings must appear on both sides of the commercial vehicle.
- Letters shall be of contrasting color with the background.
- During daylight hours, markings must be legible from a distance of 50 feet while the vehicle is stationary.
- Markings must retain the legibility requirements.
- Markings can be painted on the commercial vehicle or can consist of a removable device, as long as the device meets the identification and legibility requirements.
How can I contact the federal agency that regulates commercial vehicles?
Federal Motor Carrier Safety Administration (FMCSA)
Attn: Division Administrator
70 Commercial Street
Concord, NH 03301
Where can medical certificates be obtained?
How long is a medical certificate valid?
A maximum of 2 years. Certain medical conditions may allow for less a period of time.
Is it necessary to have my medical certificate with me when driving a commercial vehicle?
Where can I obtain a medical waiver application?
Contact the NH Division of Motor Vehicles.
Do drug and alcohol regulations apply to commercial drivers?
Yes, to persons and their employers who operate commercial vehicles involved in commerce in any State and are subject to the US commercial driver license requirements (commercial vehicles in excess of 26,000 pounds), or Mexican and Canadian driver license requirements.
When are commercial drivers required to have a drug test?
Before driving a commercial vehicle in the furtherance of a commercial enterprise.
Does a commercial vehicle registered and inspected in NH also have to obtain a federal inspection?
Is it necessary for commercial vehicle drivers to keep track of their hours?
Yes, for each 24-hour period, unless the driver does not exceed a 100 air-mile radius from his/her initial point of origin.
What routes must I take if I have a double trailer?
Does NH allow triple trailers on its roads?
Where can I learn more about commercial vehicle requirements?
NH State Police Troop G conducts free informational sessions monthly. Dates and times.
Size and Weight
What is the bridge formula?
The formula limits the weight on groups of axles to reduce the risk of damage to highway bridges.
Allowable weight depends on the number of axles a vehicle has and the distance between the axles.
How far can a law enforcement officer require a vehicle to travel in order to be weighed?
Not exceeding 10 miles to the nearest scales.
How much is the fine for being overweight?
- $100.00 for a first offense.
- $250.00 for subsequent offenses on interstate defense highways within a calendar year.
- Fines on non-interstate highways are computed by $.02, .03, and .04 a pound for every pound over the legal limit.
What are the legal dimensions for loads?
Can I transport a load of greater than legal dimensions?
Yes, if you obtain an over dimension permit through the NH DOT at (603) 271-2691.
Can a law enforcement officer allow a tolerance?
- 5% tolerance above the limitations at his/her discretion.
- If the vehicle is certified in NH to carry additional weight, the officer shall grant a 5% tolerance on gross weight and a 10% tolerance on axle weight.
- On May 4, 2006, The State received documentation from the Federal Highway Administration that tolerances are now allowed on Interstate 89, 93 and 95. These tolerances will be allowed and are calculated at 5% gross weight and 10% on axle weights. This tolerance is allowed on New Hampshire overweight certified vehicles up to and including 99,000 pounds.
Can trucks be certified to carry additional weight?
Yes. The number of axles a vehicle has and the distance between the axles, as well as the manufacturer’s axle and tire ratings determine whether a vehicle may be eligible to become certified to haul additional weight.
How much additional weight can a certified truck carry?
Are overweight certifications allowed on every road?
No. Trucks hauling certified loads cannot use the interstate defense highway system or cross bridges posted e2.
What is the maximum weight allowed on the interstate defense highway system for a standard 5 or 6 axle tractor-trailer?
For further information, please refer to the following:
- Weight on Interstate and Defense Highway System RSA 266:18
- Weight on Non-Interstate and General Highway System RSA 266:18-a
- Weight for Vehicles with Additional Weight Certification RSA 266:18-b
- Penalty for Overweight RSA 266:25
- Penalty for Oversize RSA 266:16
- Exceeding Posted Bridge Weight 234:39
- Over Height RSA 266:10
- Over Length RSA 266:11
- Over Width RSA 266:12
- Weighing of Vehicles RSA 266:17