Highway Engineering
The desirable length of overtaking zone as per IRC recommendation is equal to

two times the overtaking sight distance
three times the overtaking sight distance
five times the overtaking sight distance
overtaking sight distance

ANSWER DOWNLOAD EXAMIANS APP

Highway Engineering
Centre line markings are used

to designate traffic lanes
to indicate that overtaking is not permitted
to designate proper lateral placement of vehicles before turning to different directions
in roadways meant for two way traffic

ANSWER DOWNLOAD EXAMIANS APP