State Emission Standards - Gas: TEXAS
NOTE:
The Texas program incorporates original U.S. EPA recommended start-up ASM2525 and ASM5015 standards for 1995 and newer model year vehicles. Refer to appropriate model year range in appropriate table. See U. S. EPA ASM2525 & ASM5015 START-UP EMISSION STANDARDS .
TEXAS EMISSION STANDARDS - 2-SPEED IDLE TEST
| Application | HC ppm (CO %) | |
|---|---|---|
| Light Duty Vehicles (8500 GVWR Or Less) | ||
| 1979 | 600 (6.0) | |
| 1980 | 400 (4.0) | |
| 1981 & Newer | 220 (1.2) | |
| Heavy Duty Vehicles (8501 GVWR Or More) | ||
| 1979-81 | 700 (7.0) | |
| 1982-84 | 500 (5.0) | |
| 1985 & Newer | 300 (3.0) | |