The Pennsylvania Department of Transportation has a document titled Sound Land Use Planning For Your Community: Model Ordinance Language for Addressing Traffic Noise (PDF - 1.8MB) to assist communities in developing noise zoning strategies, including Planned Residential Development (PRD), overlay districts, setbacks, and conditional use/special use. Also, definitions of terms that may be used in developing municipal land use ordinances are presented.
While not available online, the City of San Antonio's subdivision plats state, "For residential development directly adjacent to State right of way, the Developer shall be responsible for adequate set-back and/or sound abatement measures for future noise mitigation."
The Fairfax County Policy Plan (PDF - 172Kb) has a noise element on pages 9 and 10 that establishes noise level limits for new and existing development along existing highways. These noise level limits are based on the Ldn metric and come from "Guidelines for Considering Noise in Land Use Planning and Control". New development in the 65-75 dBA Ldn range requires mitigation and no development shall be in zones with a 75 dBA Ldn or higher.
TR News: Transportation Noise: Measures and Countermeasures September-October 2005 issue has many interesting articles about transportation noise, but has several articles regarding NCP near highways.