Example of Heavy- Duty Vehicles
A majority of on-road mobile emissions are generated from heavy-duty vehicles [1]. These vehicles are categorized as vehicles that have a gross vehicle weight rating (GVWR) over 14,000 pounds.
Examples of vehicles over 14,000 pounds GVWR include:
![Image of bucket truck](/nctcg/media/Transportation/Images/photo/getty/GettyImages-1245150958.jpg)
Bucket Truck
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![Image of delivery truck](/getmedia/412483d5-e9f7-451a-86de-83fc2355d177/GettyImages-172124825.jpg.aspx?width=234&height=156)
Delivery Truck
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![Image of dump truck](/nctcg/media/Transportation/Images/photo/getty/GettyImages-182478303.jpg)
Dump Truck
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![Image of inner-city tour bus](/getmedia/acd7feb7-d9ff-4494-b97c-e0dde5ba4e6d/GettyImages-583687552.jpg.aspx?width=210&height=140)
Inner- City Tour Bus
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![Image of large motor home](/nctcg/media/Transportation/Images/photo/getty/GettyImages-172348534.jpg)
Large Motor Home
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![Image of refuse hauler](/getmedia/22288e65-7dc6-48dd-a21a-24fbb18a9873/GettyImages-104737266.jpg.aspx?width=211&height=122)
Refuse Hauler
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![Image of large yellow school bus](/nctcg/media/Transportation/Images/photo/getty/GettyImages-171554822.jpg)
School Bus
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![image of stake truck](/nctcg/media/Transportation/Images/photo/getty/GettyImages-148984547.jpg)
Stake Truck
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![image of yellow step van](/nctcg/media/Transportation/Images/photo/getty/GettyImages-519030263.jpg)
Step Van
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![Tanker truck](/nctcg/media/Transportation/Images/photo/getty/GettyImages-483183221.jpg)
Tanker Truck
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![Image of tow truck](/getmedia/ad083f74-83df-4c7a-b9f5-1764200a3868/GettyImages-157197746.jpg.aspx?width=240&height=111)
Tow Truck
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![Image of tractor-trailer rig](/getmedia/5b23b362-4ccf-46f5-b47d-38b19b4d267a/GettyImages-1167628457.jpg.aspx?width=276&height=160)
Tractor-Trailer Rig
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![Image of transit bus](/getmedia/e1566feb-3129-41f5-b2dd-c0d69ae6a019/GettyImages-808410394.jpg.aspx?width=349&height=231)
Transit Bus
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- Air Quality Handbook, Page 9