Ignition interlock devices play a very important role in ensuring the safety of all drivers and pedestrians. Because of this, it is held to very strict quality standards. As a matter of fact, it needs to meet the strict requirements of the National Highway Traffic Safety Administration or the NHTSA. It also needs to undergo a series of tests before it gets approved in the state where it is intended to be sold and before it is leased in the market. NHTSA has also released a model guidelines as a way of encouraging the states to adopt the said device for drivers who have already been convicted for drunk driving.