Question

Below symbols refer to ____________

(a) additional signs

(b) cautionary sign

(c) mandatory sign

(d) informative sign

The question was posed to me by my school principal while I was bunking the class.

My question is based upon Estimate of Metalled Roads topic in portion Road Estimating, Sanitary and Water Supply Work of Civil Engineering Drawing

Answer 1

Correct choice is (c) mandatory sign

For explanation: Mandatory signs are road signs which are used to set the obligations of all traffic which use a specific area of road. Unlike prohibitory signs, mandatory signs tell traffic what it must do, rather than must not do. Most mandatory road signs are circular, may use white symbols on a blue background with white border or black symbols on a white background with a red border, although the latter is also associated with prohibitory signs.