(1) If at any time it appears to a highway authority that Highway

any highway in its charge or any portion thereof is or has been ar A tendered unsafe for vehicular or pedestrain traffic by reason of damage trafic when or otherwise, it may, subject to such rules as may be prescribed in highwa: this behalf, either close the highway or the portion of it to all traffic deemed of to any class of traffic, or regulate the number and speed of unsafe. vehicles using the highway.