Q&A - Projecting Load

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I can't find it anywhere... How far can, say a 2x4, stick out of a trailer before it needs a flag? (Alberta used to be 5 feet...)

Here you are:

Lamps or flags on front and rear projections

4.20 (1) A vehicle on a highway must not carry a load or have an integral part of the vehicle which projects more than 1 m beyond the front wheels or the front bumper of the vehicle unless,

(a) during the time specified in section 4.01, the extreme tip of the projection is illuminatedwith a lamp that is capable of displaying only white light visible from the front and sides of the vehicle, and

(b) at any time other than that specified in section 4.01, a red flag or cloth that complies with section 8.05 (c) of the Commercial Transport Regulations and which is visible from the front and sides of the vehicle is attached to the extreme tip of the projection.

(2) A vehicle on a highway must not carry a load or have an integral part of the vehicle which projects more than 1.2 m to the rear of the load-deck or body of the vehicle unless,

(a) during the time specified in section 4.01, the extreme tip of the projection is lighted with a lamp that is capable of displaying only red light visible from a distance of 150 m to the rear of the vehicle, and

(b) at any time other than that specified in section 4.01, a red flag or cloth that complies with section 8.05

(c) of the Commercial Transport Regulations and which is visible to the driver of a vehicle to the rear is attached to the extreme tip of the projection.