The self service kiosk is awesome, if your vehicle is 2005 or newer.
You can use it 24/7/365, whenever it's convenient for you. Sooooo much better than trying to get to a testing station during their bankers-hours.
Anonymous
11/27/2019 12:26
Subject: Maryland smog check
You should be good at a self-service kiosk. Very quick.
Don't go if your check engine light is on - you won't pass. Get it fixed.
If your light is off, you will almost certainly pass.