Why were camels brought to australia ?

They were brought to Australia to assist the exploration of inland Australia.

Camels were imported to Australia in the 19th century from Arabia, India and Afghanistan for transport and heavy work in the outback.

do you have a picture?

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.