Ottawa By-law 2017-301, s. 4(2) — Traffic and Parking By-law

When official signs, authorized signs, traffic control signals, markings, barricades, or traffic control devices have been erected, every person shall obey the instruction of or directions on such sign, traffic control signal, marking, barricade, so erected or installed and the sign, traffic control signal, marking, traffic control devices or other structures, plants and equipment are deemed to have been erected pursuant to the section that normally regulates or prohibits the matter.