150) When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of rotary is

151) Maximum number of vehicles can be parked with

152) When the width of kerb parking space and width of street are limited, generally preferred parking system is

153) As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is

154) The most economical lighting layout which is suitable for narrow roads is