Vehicle Idling Restrictions: San Antonio vs Universal City
How do vehicle idling restrictions rules compare between San Antonio, TX and Universal City, TX?
San Antonio and Universal City have similar restriction levels.
San Antonio, TX
Bexar County
Bexar County opted into TCEQ Rule 30 TAC 114.512, prohibiting commercial vehicles over 14,000 pounds GVWR from idling more than five consecutive minutes when temperatures fall between 40 and 90 degrees, with several work-related exemptions.
View full San Antonio rules →Universal City, TX
Bexar County
Bexar County participates in TCEQ's locally enforced idling rule for heavy diesel trucks. Operators of vehicles over 14,000 pounds may not idle more than five minutes within affected counties during the April-October ozone season.
View full Universal City rules →Key Facts Comparison
| Fact | San Antonio | Universal City |
|---|---|---|
| State rule | 30 TAC 114.512 | - |
| Idle limit | 5 consecutive minutes | - |
| Vehicle threshold | Over 14,000 lbs GVWR | Over 14,000 lbs GVWR |
| Temperature window | 40 to 90 degrees | - |
| Enforcement | TCEQ, SAPD, Sheriff | - |
| Limit | - | 5 minutes |
| Authority | - | 30 TAC 114.512 |
| Season | - | Ozone watch periods |
Highlighted rows indicate differences between cities.
San Antonio FAQ
Does the rule apply to my pickup truck?
No. The five-minute limit only covers commercial motor vehicles over 14,000 pounds GVWR. Personal cars, pickups, and SUVs face no idling restriction in San Antonio or Bexar County.
Can a truck idle for sleeper cab heat?
Yes. Sleeper-berth idling for occupant temperature control is exempt between October 1 and April 30. Outside that window, drivers must use auxiliary power or shut off after five minutes.
Universal City FAQ
Does the rule apply to passenger cars?
No, only diesel motor vehicles with gross vehicle weight rating above 14,000 pounds, mostly heavy trucks and buses.
Can I idle to keep the cab cool?
Comfort idling is not exempt; sleeper berths during federally mandated rest periods are exempt under the TCEQ rule.
Compare other topics
See how San Antonio and Universal City compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool