The legal limit for driving in Colorado is .08 percent blood alcohol content (BAC) but at .15, you're considered to be a "persistent" drunk driver.
If you are convicted of DUI, you will face serious penalties. These penalties include fines, jail time, license suspension, mandatory treatment programs, community service, and more.
Any vehicle you may use must have an interlock or you could be arrested..
If you are convicted of DUI (driving under the influence) three times within your lifetime, you will be required to install an ignition interlock device on your vehicle. These devices prevent you from starting your engine unless you blow into them first.
If you choose to wait, you will not be able to drive until the interlock device has been installed. This means that you will not be able start your car without blowing into the device. If you do not install the device, you will be charged with a misdemeanor offense.
If you are convicted of driving under the influence (DUI) two times within five years, you will be required to install an ignition interlock device. In addition, you will be required by law to install an ignition interlocking system before you can apply for reinstatement of your driver's license.