Section 485.04. Motor vehicle emission limitations; exemptions.

 

(1)   Applicability. Except as provided in subs. (9) and (10) , the emission limitations in this section apply to motor vehicles subject to inspection under s. 110.20 (6) (a) , Stats., when inspected under ch. Trans 131 .

(2)   Transient emission test. Except as provided in sub. (7) , any motor vehicle undergoing the transient emission test may not emit from the exhaust system:

(a) Carbon monoxide in rates that exceed both:

1. The applicable composite emission rate in Table 1 when measured over the entire transient driving cycle.

2. The applicable phase 2 emission rate in Table 1 when measured from second 94 to the end of the transient driving cycle.

(b) Hydrocarbons in rates that exceed both:

1. The applicable composite emission rate in Table 1 when measured over the entire transient driving cycle.

2. The applicable phase 2 emission rate in Table 1 when measured from second 94 to the end of the transient driving cycle.

(c) Oxides of nitrogen in a rate that exceeds the applicable composite emission rate in Table 1 when measured over the entire transient driving cycle, except as provided in sub. (9) .

(5)   Gas cap integrity test. Any motor vehicle gas cap undergoing a test for pressure leaks on a gas cap tester rig may not exhibit a pressure decay of 6 inches of water or more during a 10 second measurement period after the gas cap is pressurized to 28 " 1.0 inches of water.

(7)   Fast-pass transient emission test. Compliance with the emission limitations in sub. (2) for the transient emission test may be demonstrated prior to the completion of the test if all of the following conditions are met during the same second of the transient driving cycle:

(a) Hydrocarbons. For hydrocarbons, one of the following:

1. At least 30 seconds of the transient driving cycle has elapsed and the cumulative emission level of hydrocarbons, measured from the start of the cycle in grams, is less than the applicable composite fast-pass emission limitation in sub. (1) of Table 3.

2. At least 94 seconds of the transient driving cycle has elapsed and the cumulative emission level of hydrocarbons, measured from second 94 of the cycle in grams, is less than the applicable phase 2 fast-pass emission limitation in sub. (1) of Table 3.

(b) Carbon monoxide. For carbon monoxide, one of the following:

1. At least 30 seconds of the transient driving cycle has elapsed and the cumulative emission level of carbon monoxide, measured from the start of the cycle in grams, is less than the applicable composite fast-pass emission limitation in sub. (2) of Table 3.

2. At least 94 seconds of the transient driving cycle has elapsed and the cumulative emission level of carbon monoxide, measured from second 94 of the cycle in grams, is less than the applicable phase 2 fast-pass emission limitation in sub. (2) of Table 3.

(c) Oxides of nitrogen. Except as provided in sub. (9) , at least 30 seconds of the transient driving cycle has elapsed and the cumulative emission level of oxides of nitrogen, measured from the start of the cycle in grams, is less than the applicable composite fast-pass emission limitation in sub. (3) of Table 3.

(9)   Effective date for oxides of nitrogen requirements. An inspection under s. 110.20 (6) (a) , Stats., shall include an inspection for emissions of oxides of nitrogen. However, the emission limitations for oxides of nitrogen in subs. (2) (c) and (7) (c) shall apply for compliance purposes only to inspections conducted after May 1, 2001.

(10)   Exemptions. In addition to the vehicles specified in s. 285.30 (5) , Stats., the following motor vehicles are exempt from the emission limitations of this section:

(a) A motor vehicle powered solely by electricity.

(b) A motor vehicle registered under s. 341.266 (2) (a) or 341.268 (2) (a) , Stats., except as provided in sub. (11) .

(11)   Periodic testing of collector and hobbyist vehicles. A motor vehicle registered under s. 341.266 (2) (a) or 341.268 (2) (a) , Stats., shall be inspected and subject to the emission limitations of this section only in conjunction with any of the following actions:

(a) Initial registration of the vehicle under s. 341.266 (2) (a) or 341.268 (2) (a) , Stats.

(b) Any transfer of ownership of the vehicle.

Table 1
Emission Limitations For The Transient Emission Test - See PDF for table

(b) Light-Duty Trucks with GVWR of 6,000 pounds or less. - See PDF for table

(c) Light-Duty Trucks with GVWR of 6,001 to 8,500 pounds and Heavy-Duty Vehicles with GVWR of 8,500 pounds or less. - See PDF for table

(d) Heavy-Duty Vehicles with GVWR of 8,501 to 10,000 pounds. - See PDF for table

Table 1 (continued)
Emission Limitations For The Transient Emission Test

(e) Heavy-Duty Vehicles with GVWR greater than 10,000 pounds. - See PDF for table

(2)   Motor vehicles inspected between December 1, 1996, and November 30, 1997.
(a) Light-Duty Vehicles. - See PDF for table

(b) Light-Duty Trucks with GVWR of 6,000 pounds or less. - See PDF for table

(c) Light-Duty Trucks with GVWR of 6,001 to 8,500 pounds and Heavy-Duty Vehicles with GVWR of 8,500 pounds or less. - See PDF for table

Table 1 (continued)
Emission Limitations For The Transient Emission Test

(d) Heavy-Duty Vehicles with GVWR of 8,501 to 10,000 pounds. - See PDF for table

(e) Heavy-Duty Vehicles with GVWR greater than 10,000 pounds. - See PDF for table

(3)   Motor vehicles inspected between December 1, 1997, and November 30, 1998.
(a) Light-Duty Vehicles. - See PDF for table

(b) Light-Duty Trucks with GVWR of 6,000 pounds or less. - See PDF for table

Table 1 (continued)
Emission Limitations For The Transient Emission Test - See PDF for table - See PDF for table

(c) Light-Duty Trucks with GVWR of 6,001 to 8,500 pounds and Heavy-Duty Vehicles with GVWR of 8,500 pounds or less. - See PDF for table

(d) Heavy-Duty Vehicles with GVWR of 8,501 to 10,000 pounds. - See PDF for table

(e) Heavy-Duty Vehicles with GVWR greater than 10,000 pounds. - See PDF for table

Table 1 (continued)
Emission Limitations For The Transient Emission Test - See PDF for table - See PDF for table

(4)   Motor vehicles inspected between December 1, 1998, and March 31, 2006. (a) Light-Duty Vehicles. - See PDF for table

(b) Light-Duty Trucks with GVWR of 6,000 pounds or less. - See PDF for table

(c) Light-Duty Trucks with GVWR of 6,001 to 8,500 pounds and Heavy-Duty Vehicles with GVWR of 8,500 pounds or less. - See PDF for table

Table 1 (continued)
Emission Limitations For The Transient Emission Test - See PDF for table - See PDF for table - See PDF for table

(d) Heavy-Duty Vehicles with GVWR of 8,501 to 10,000 pounds. - See PDF for table

(e) Heavy-Duty Vehicles with GVWR greater than 10,000 pounds. - See PDF for table

(5)   Motor vehicles inspected on and after April 1, 2006. (a) Light-Duty Vehicles. - See PDF for table

Table 1 (continued)
Emission Limitations For The Transient Emission Test

(b) Light-Duty Trucks with GVWR of 6,000 pounds or less. - See PDF for table - See PDF for table

(c) Light-Duty Trucks with GVWR of 6,001 to 8,500 pounds and Heavy-Duty Vehicles with GVWR of 8,500 pounds or less. - See PDF for table

(d) Heavy-Duty Vehicles with GVWR of 8,501 to 10,000 pounds. - See PDF for table

(e) Heavy-Duty Vehicles with GVWR greater than 10,000 pounds. - See PDF for table

Table 1 (continued)
Emission Limitations For The Transient Emission Test - See PDF for table

1 Upon written department approval granted to DOT, the emission limitations for "Not Tier 1" may be applied to all 1994-1995 model year light-duty vehicles. ( Note: On January 7, 1998, the department issued to DOT written approval for this use of the "Not Tier 1" emission limitations until November 30, 1999.)

2 Upon written department approval granted to DOT, the emission limitations for ">3750 lbs LVW" may be applied to all 1996 model year and newer light-duty trucks with GVWR of 6,000 pounds or less.

3 Upon written department approval granted to DOT, the emission limitations for "Not Tier 1" may be applied to all 1994-1995 model year light-duty trucks with GVWR of 6,000 pounds or less. ( Note: On January 7, 1998, the department issued to DOT written approval for this use of the "Not Tier 1" emission limitations until November 30, 1999.)

4 Upon written department approval granted to DOT, the emission limitations for ">3750 lbs LVW" may be applied to all 1994-1995 model year light-duty trucks with GVWR of 6,000 pounds or less which are certified to meet Tier 1 emission standards.

5 Upon written department approval granted to DOT, the emission limitations for ">5750 lbs ALVW" may be applied to all 1997 model year and newer light-duty trucks with GVWR of 6,001 to 8,500 pounds and to all 1997 model year and newer heavy-duty vehicles with GVWR of 8,500 pounds or less.

6 Upon written department approval granted to DOT, the emission limitations for "Not Tier 1" may be applied to all 1996 model year light-duty trucks with GVWR of 6,001 to 8,500 pounds and to all 1996 model year heavy-duty vehicles with GVWR of 8,500 pounds or less. ( Note: On January 7, 1998, the department issued to DOT written approval for this use of the ``Not Tier 1" emission limitations until November 30, 1999.)

7 Upon written department approval granted to DOT, the emission limitations for ">5750 lbs ALVW" may be applied to all 1996 model year light-duty trucks with GVWR of 6,001 to 8,500 pounds which are certified to meet Tier 1 emission standards and to all 1996 model year heavy-duty vehicles with GVWR of 8,500 pounds or less which are certified to meet Tier 1 emission standards. - See PDF for table

(1)   Hydrocarbon exhaust emissions.
(a) Motor vehicles having composite hydrocarbon emission limitations in Table 1 of at least 0.60 grams/mile but less than 0.80 grams/mile. - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(b) Motor vehicles having composite hydrocarbon emission limitations in Table 1 of at least 0.80 grams/mile but less than 1.25 grams/mile. - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(c) Motor vehicles having composite hydrocarbon emission limitations in Table 1 of at least 1.25 grams/mile but less than 2.00 grams/mile. - See PDF for table - See PDF for table - See PDF for table

(d) Motor vehicles having composite hydrocarbon emission limitations in Table 1 of 2.00 grams/mile or greater. - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(2)   Carbon monoxide exhaust emissions. (a) Motor vehicles having composite carbon monoxide emission limitations in Table 1 of at least 10.0 grams/mile but less than 15.0 grams/mile. - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(b) Motor vehicles having composite carbon monoxide emission limitations in Table 1 of at least 15.0 grams/mile but less than 20.0 grams/mile. - See PDF for table - See PDF for table - See PDF for table

(c) Motor vehicles having composite carbon monoxide emission limitations in Table 1 of at least 20.0 grams/mile but less than 30.0 grams/mile. - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(d) Motor vehicles having composite carbon monoxide emission limitations in Table 1 of 30.0 grams/mile or greater. - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(3)   Oxides of nitrogen exhaust emissions. (a) Motor vehicles having composite oxides of nitrogen emission limitations in Table 1 of at least 1.5 grams/mile but less than 2.0 grams/mile. - See PDF for table - See PDF for table - See PDF for table

(b) Motor vehicles having composite oxides of nitrogen emission limitations in Table 1 of at least 2.0 grams/mile but less than 2.5 grams/mile. - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(c) Motor vehicles having composite oxides of nitrogen emission limitations in Table 1 of at least 2.5 grams/mile but less than 3.0 grams/mile. - See PDF for table - See PDF for table - See PDF for table - See PDF for table - See PDF for table

(d) Motor vehicles having composite oxides of nitrogen emission limitations in Table 1 of 3.0 grams/mile or greater. - See PDF for table - See PDF for table - See PDF for table

History: Renum. from NR 154.17 (3) and am. Register, September, 1986, No. 369 , eff. 11-1-86; am. Table, Register, February, 1990, No. 410 , eff. 3-1-90 ; r. and recr. Register, December, 1995, No. 480 , eff. 1-1-96; am. (9) (b), Register, January, 1997, No. 493 , eff. 2-1-97; r. and recr. Table 1 (3), renum. Table 3, (1) (a) to (c), (2) (a) to (c) and (3) (a) to (c) to be (1) (b) to (d), (2) (b) to (d) and (3) (b) to (d), Register, November, 1998, No. 515 , eff. 12-1-98; am. (2) (c), (8) (a), (b), (10) (intro.), r. and recr. Table 3 (1) (a), (2) (a) and (3) (a), r. Table 1 (5), Register, November, 1999, No. 527 , eff. 12-1-99; renum. (9) (a) to be (9), r. (9) (b), Register, January, 2001, No. 541 , eff. 2-1-01; CR 05-072 : am. Table 1 (4) (title) and cr. Table 1 (5) Register March 2006 No. 603 , eff. 4-1-06; CR 10-049 : am. (2) (intro.), (7) (title), (9), r. (3), (4), (6), (7) (a) (title), (b), (8), Table 2, 4, Register November 2010 No. 659 , eff. 12-1-10.