The cost of a conviction for driving under the influence used to be steep in Connecticut. Now it's even steeper. Not only do the possibility of jail time and fines remain as penalties in some cases, but under a new state law that took effect with the new year, those with a DUI conviction have to install a device in their car that prevents it from starting unless they pass what amounts to a breathalyzer test.

This is no small matter. The cost of installing these ignition interlock devices is put directly on the person convicted of driving under the influence, even if it's their first conviction. According to Sens-O-Lock of America, one maker of the devices, the bill can add up fast.

First, there's the $100 charge for installation. Then there's a $75-month rental fee for the device. On top of that, there's a $20 charge every two months to have the thing recalibrated. There's also a $100 administration fee to the state. The law requires the devices to be used for one year for first convictions. Those convicted of a second offense have to keep the unit on the vehicle for three years.

When you take all that into account, the cost at a minimum runs about $1,220.

Douglas Fuchs, head of the Connecticut Police Chiefs Association, anticipates good things from the new restrictions. He is on record as saying that the interlock device is like a speed bump. In his words, "It is very difficult to speed over the hump and much more difficult to operate a vehicle when an [ignition interlock device] is required."

The organization Mothers Against Drunk Driving claims that the interlock devices hold the potential for reducing repeat drunk driving offenses by 67 percent.

Source: Wilton Patch, "Car Breathalyzers Mandatory for DUI Offenders," Justin Reynolds, Jan. 11, 2012