New cameras on Monash Fwy??

[joolz]

Noticed the other day on both sides of the Monash Fwy near High st new cameras on a swing out boom. They are currently facing across the lanes and are around 30 meters apart. Im not sure if they are speed cameras or plate recognition cameras. If they are speed cameras why 2 sets 30 meters apart and how stable would they be to give an accurate reading.