system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: I've seen a claim that calling out DUI checkpoints helps "deter" people from driving drunk. This makes no sense to me.

For the app description of one "Mr. Checkpoint" service (which has over 60k twitter followers and relays reports of checkpoints, DUI or otherwise), they claim that it helps to "deter DUI and promote public safety".  I've seen people call out check points plenty, but this is the first time I've seen a dedicated service and the claim that such a thing would "deter DUI".

This simply doesn't make sense to me. If anything, if I were somebody planning on getting behind the wheel after having some drinks this would be the kind of app I'd use in hopes of *getting away with* drunk driving. 

This isn't a particularly staunch view, and I'm not looking to debate regarding the use of the checkpoints themselves. The view I'm looking to have changed or at least see an argument against is that the idea that it would somehow "deter DUIs" makes no sense.
gpt
I think the idea is that if there's a DUI checkpoint in the area that someone is planning on drinking in then they won't bother to take the risk of driving in that area in the first place instead of trying to avoid the checkpoint. Getting a DUI can be extremely harmful to someone's life (aside from the fact that driving drunk endangers everyone on the road), so some people might decide that it's simply not worth the risk to try to drive drunk and avoid a DUI checkpoint.