This sign indicates a temporary narrowing of the road ahead, on the left side.
<a href="//commons.wikimedia.org/wiki/File:Logo_du_le_minist%C3%A8re_des_Transports_du_Qu%C3%A9bec.svg" class="image"><img alt="Logo du le ministère des Transports du Québec.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Logo_du_le_minist%C3%A8re_des_Transports_du_Qu%C3%A9bec.svg/150px-Logo_du_le_minist%C3%A8re_des_Transports_du_Qu%C3%A9bec.svg.png" decoding="async" width="150" height="35" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Logo_du_le_minist%C3%A8re_des_Transports_du_Qu%C3%A9bec.svg/225px-Logo_du_le_minist%C3%A8re_des_Transports_du_Qu%C3%A9bec.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/0/0f/Logo_du_le_minist%C3%A8re_des_Transports_du_Qu%C3%A9bec.svg/300px-Logo_du_le_minist%C3%A8re_des_Transports_du_Qu%C3%A9bec.svg.png 2x" data-file-width="1893" data-file-height="443"></a>
Derivative of <a href="//commons.wikimedia.org/wiki/File:Qu%C3%A9bec_D-210-2-G.svg" class="mw-redirect" title="File:Québec D-210-2-G.svg">File:Québec D-210-2-G.svg</a>.