There are now 33 states that have emission testing programs in part or all of the state. So, depending on how things work in that state, you usually have to go once a year and have your car checked before getting your registration renewed. The testing itself is for a good purpose, which is better air quality. But it’s had a bit of a Frankenstein effect. If the “check engine” light on your dashboard, it can mean that something is wrong with your emissions. But it can also mean the gas cap is off or some other unrelated problem is going on. But in several states, if the “check engine” light is on when getting your car tested, you automatically fail. The mechanics don’t even inspect the car. It’s going on in Ohio, Maine, Louisiana, Maine, Vermont and New Hampshire, and the trend is growing. There may be nothing wrong with your car, but you have to pay to get it checked out because you failed the test. A smarter way to check emissions is to do “drive-by tests” along roads. Measuring devices are set up in key high traffic areas, and the device automatically tracks the car if it is emitting harmful fumes. It’s already being tested in California, according to the Orange County Register. Starting next year, infrared beams are going to sense when cars are spewing pollution on the interstates. The device also takes a picture of the car tag and sends the person a notice to get the car repaired. It’s a much more efficient and accurate way of testing, and more governments should pay attention.