It shall not be lawful for any person without the permission of the commissioner to make any alteration in the fences, posts, or other materials of any public street.

Power of the corporation to recover expenses caused by extraordinary traffic ("Power of the corporation to recover expenses caused by extraordinary traffic") When by a certificate of an officer of the Works department of the corporation or of an Executive Engineer of the corporation it appears that having regard to the average expense of repairing streets in the neighbourhood, extraordinary expenses have been incurred by the corporation in repairing the street by damage caused by excessive weight passing along the street or extraordinary traffic thereon, the commissioner may recover from any person by or in consequence of whose order such weight or traffic has been conducted, the amount of such expenses as may be proved to the satisfaction of the commissioner to have been incurred by the corporation by the damage arising from such weight or traffic: Provided that any person against whom expenses may be recoverable under this section may enter into an agreement with the corporation for the payment of a composition in respect of such weight or traffic and thereupon the persons so paying shall not be subject to any proceedings under this section.