General Road and Highway Discussion

[NotStan]

I think this is the applicable section:

I think this might be specific to controlling traffic when it's limited to a single lane (traffic can flow in only one direction at a time) due to construction.  See the main section 146:

146 (1) Despite subsection 144 (31), during construction or maintenance activities on or adjacent to a highway, a portable lane control signal system may be operated on the highway in accordance with the regulations by the authority having jurisdiction and control of the highway or any person authorized by that authority.  R.S.O. 1990, c. H.8, s. 146 (1).

But in any case not just anyone can decide to become a traffic control person.

“traffic control person” means a person who is directing traffic and,
(a) is employed by,
(i) the road authority with jurisdiction over the highway,
(ii) a public utility within the meaning of the Public Utilities Act or the Municipal Act, 2001,
(iii) a transmitter or distributor within the meaning of the Electricity Act, 1998, or
(iv) a person under contract with the road authority, public utility, transmitter or distributor to do construction or maintenance work on or adjacent to the roadway, or
(b) is employed by or under contract with a person who has been issued a permit or written authorization by the road authority with jurisdiction over the highway to occupy a lane or a portion of a highway in order to undertake work on or adjacent to the highway. (“agent de régulation de la circulation”)  2005, c. 26, Sched. A, s. 23.

Thanks!