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

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

ANSWER DOWNLOAD EXAMIANS APP

Highway Engineering
A traffic rotary is justified where

space is limited and costly
when traffic volume is less than 500 vehicles per hour
when traffic volume is more than 5000 vehicles per hour
number of intersecting roads is between 4 and 7

ANSWER DOWNLOAD EXAMIANS APP