General Emissions Testing Information Q: Why is the Emissions Program important? A: The program is a key component of Arizona’s initiative to protect air quality while allowing for economic growth. With the pollution reductions achieved, there is more room for new businesses to bring jobs to the area and for existing businesses to expand.

Advantages and Disadvantages of Using Parallel Data Transmission. The main advantages of parallel transmission over serial transmission are: it is easier to program; and data is sent faster. Although parallel transmission can transfer data faster, it requires more transmission channels than serial transmission. Advantages: Advantage of parallel transmission is speed. Because there are dedicated wire paths which are used to send the bits simultaneously. Disadvantages Disadvantage of parallel Transmission is costly because transmission requires n communication lines just to transmit the data stream, so cost of implementation is high. What are the advantages and disadvantages of serial and parallel LCD? You can write a buffer of data to a single register, then do other stuff with the CPU while. Both Serial and Parallel Transmission have their advantages and disadvantages respectively. Parallel Transmission is used for shorter distance, provides greater speed. On the other hand, Serial Transmission is reliable for transferring data to longer distance. The advantages and disadvantages of serial links in communication system design June 20, 2002 Serial links, based on flexible PHYs, are frequently more efficient than parallel alternatives.

Without the emissions program, federal laws would seriously restrict economic growth. Q: Why does my vehicle need to be tested? A: Automobiles are a major contributor to ground level air pollution. In Phoenix, the program is an important component of reducing volatile organic compounds and maintaining air quality.

General Emissions Testing Information Q: Why is the Emissions Program important? A: The program is a key component of Arizona’s initiative to protect air quality while allowing for economic growth.

High pollution levels affect the future health of our children and make it more difficult to draw new business and create jobs in our communities. In Tucson, the program is key to maintaining a healthy and attractive environment for Southern Arizona.

The Emissions Program will help provide a healthy future and a strong economy for Arizona and for our families. Q: Who is required to have their vehicle emissions tested? A: All residents of the greater Phoenix and Tucson areas and those who regularly commute into the areas for work or school are required to have their 1967 or newer vehicles pass an emissions test. Most vehicles newer than 6 years old are exempt from testing, and certain other vehicle exemptions apply (see ). If you are not sure if you live in the emissions control area,. Q: How will I be notified if my vehicle needs a test? A: Motor Vehicle (MVD) will send a renewal notice stating if your vehicle requires emissions, or you may call (602)771-3950.

Q: Do I need an appointment before taking my vehicle to a test station? A: No, vehicles are tested on a first-come, first-serve basis.

No appointments are necessary. For your convenience, inspection stations are open until 7 PM weekdays and 8 AM to 5 PM on Saturdays.

You may save some time by visiting the inspection stations in the evening (from 5 PM – 7 PM on weekdays), on Saturday afternoon and avoiding the end of the month. Q: How far in advance can I have my vehicle tested? A: Vehicles cannot be tested more than 90 days prior to your registration date for registration purposes. If you are purchasing a car from someone or just want to know how well it is performing, you may test any time. If purchased from a dealer, the dealer is required to have the vehicle pass emissions prior to sale. Please note: Once tested, the test fee cannot be refunded. Q: Who can take my vehicle in for a test?

A: Any licensed motorist may take a vehicle to the testing station. Testing Specifics & Payment Q: What vehicles must be tested?

A: Vehicles that are model year 1967 and newer and more than 5 years old require emissions—this includes gasoline and diesel-fueled vehicles. Alternative fuel, flexible fuel (E85) and hybrid vehicles also require emissions. Newer vehicles are exempt for the first 5 years of registration.

Some vehicles may require a different schedule. If unsure, call 1-877-myAZcar (1-877-692-9227.) Q: How often will my vehicle need to be tested? A: Depending on the vehicle’s year and weight, emissions test frequency can vary from 1 to 2 years.

Vehicles 1981 and newer that are light duty vehicles (not diesel) will require emissions every 2 years. Vehicles that are 1980 and older, and most vehicles in Tucson, require emissions every year.

Check the registration renewal notice to see if your vehicle is due. Q: What paperwork do I have to take with me to emissions inspection? A: If you have been registered in Arizona for some time, you will not need to bring anything with you—we will have your vehicle information in the computer database. If you are new to Arizona, we will need to see the current title or registration of the vehicle and your residence address. Of course, you will also need the test fee in cash, check or credit/debit card.

Q: Are there any restrictions on where I can have my vehicle tested? A: Vehicles that are registered in Maricopa County cannot be emission tested in the Tucson area, due to the different test requirements. Therefore, you must test in your respective area, but you may use any inspection station in that area. However, if the vehicle is tested using the OBD test, it may be tested in either area. Q: Do I have to pay if my vehicle fails the test? A: A vehicle test fee is charged for the first test. A FREE retest is done if the failing vehicle is tested within 60 days of the initial test.