I have the impression that these tools and resources could have been available to you already, and that it was not the Emergencies Act that enabled their use.
When a car obstructs a public road, you can write a ticket, you can have it towed. You can set up physical barriers, you can block off streets to prevent cars from moving in. These are all powers you already had.
Why didn't you use them earlier?
I think there was a change in attitude once the Emergencies Act was invoked. Before that, officers were supervising protesters and monitoring the protest as if it were normal. Clearly, it was not; it was an occupation.
Before the Emergencies Act was applied, we didn't see officers trying to remove the protesters. Why was there no attempt to remove them before, even if there was a slight lack of resources? Clearly, the tools were already available to you.