in the northern hemisphere, pressure gradients and the coriolis effect applied to low pressure centers produce winds that blow

Inward and counter-clockwise.

Explanation:

In the northern hemisphere, pressure gradients and the coriolis effect applied to low pressure centers produce winds that blow inward and counter-clockwise while on the other hand, high pressure centers of northern hemisphere blow outward and counter-clockwise. Inward and clockwise blow of wind occurs in the southern hemisphere of the earth.

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.

sorry, but you do not have posted the diagram.