HDV Idling Documents and Links

    Memorandum of Agreement         (PDF)

    See also:  

Contact Information:

email: info@engineoff.org
phone: 512-343-SMOG (7664)

Engine off is a service of:


How to Report an Idling Vehicle


Report HDV Idling and have a positive impact on air pollution in Central Texas.

  • If you see a parked heavy duty diesel truck, van or bus with its engine running for more than 5 consecutive minutes anywhere in Bastrop, Caldwell, Hays, Travis and Williamson counties, write down its license number, as well as the date, time and location of the occurrence.
Report the vehicle by submitting the online form here or by calling 512-343-SMOG (7664) within 30 days. Reporting is free, and you do not have to give your name.

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