Taken from the Commercial Vehicle Dimension and Weight Regulation AR315/2002, DefinitionsIn this Regulation,

• (q) “farm equipment” means equipment designed and intended for use in farming operations, but does not include
  
  
  • i. a truck, trailer or semi-trailer,
  • ii. farm equipment that is loaded on a truck, trailer or semi-trailer, or
  • iii. farm equipment that is towing equipment other than another piece of farm equipment;


Taken from the Commercial Vehicle Dimension and Weight Regulation AR315/2002, Part 1, Sub Section 4

Maximum Dimensions

4(1) Subject to section 62 of the Act, no person shall


• (m) operate farm equipment on a highway when
  
  
  • iv. the farm equipment, including any load, exceeds 2.6 metres in width,
  • v. the height of the highest point of the farm equipment, including any load, is greater than 5 metres from the surface of the highway, or
  • vi. the overall length of the farm equipment, including any load, exceeds 30.5 meters
• (r) operate a truck towing farm equipment, other than a grain auger, on a highway when
  
  
  • i. the height of the highest point of the farm equipment, including any load, is greater than 5 meters from the surface of the highway, or
  • ii. the overall length of the combination exceeds 23 metres;
• (s) operate a truck or farm equipment towing a grain auger on a highway when
  
  
  • i. the height of the highest point of the farm equipment, including any load, is greater than 5 meters from the surface of the highway, or
  • ii. the overall length of the combination exceeds
  • A. 30.5 metres during daytime, or
  • B. 23 metres during nighttime or when visibility is less than 150 metres;
• (t) transport farm equipment loaded on a trailer on a highway when
  
  
  • i. the height of the highest point of the farm equipment, including any load, is greater than 5 meters from the surface of the highway,
  • ii. the overall width exceeds 2.6 mebres, or
  • iii. the overall length of the combination exceeds 23 metres.


Taken from the Commercial Vehicle Dimension and Weight Regulation AR315/2002, Part 1, Sub Section 6

The provisions of Section 4 with respect to the width of a commercial vehicle do not apply to


• (a) a rubber tired tractor equipped with a dozer blade, if conspicuously displayed on each side of the widest part of the farm tractor, or displayed at the extremities of the blade, there are,
  
  
  • i. when the farm tractor is used during daytime, warning flags, and
  • ii. when the farm tractor is used during night time,
  • A. warning lights, or
  • B. warning flags made of fluorescent material that are adequately illuminated by the farm tractor’s working lights;
• (b) farm equipment loaded on a trailer
  
  
  • i. during daytime, if warning flags are displayed at the widest part of the vehicle or load, or
  • ii. during night time, if warning lights are displayed at the widest part of the vehicle or load;
• (b.1) a trailer or its load, if
  
  
  • i. the trailer and its load are less than 3.8 meters in width,
  • ii. the trailer and its load are being towed by a farm tractor, and
  • iii. the trailer is being used to move materials incidental to farm operations from one farm or field to another farm or field or from one portion of the farm or field to another portion of the farm or field;
• (c) any other farm equipment
  
  
  • i. during daytime, or
  • ii. during night time, if warning lights are displayed at the widest part of the vehicle or load;

To view the Commercial Vehicle Dimension and Weight Regulation in its’ entirety, please follow the below link:

https://www.qp.alberta.ca/documents/Regs/2002_315.pdf