The Federal Highway Administration (FHWA) Office of Planning, Environment and Realty's (HEP) Surface Transportation Environment and Planning Cooperative Research Program (STEP) ended on September 30, 2012. For current HEP research information, please see HEP's research web site.
| Emphasis Area | Number of Comments |
|---|---|
| Water /Wetlands/Vegetation /Wildlife Habitat/Brownfields | 284 |
| Air Quality and Global Climate Change | 110 |
| Noise | 66 |
| Bicycle / Pedestrian and Health | 57 |
| General STEP Comments on Environment | 46 |
| Context Sensitive Solutions | 36 |
| Environmental Streamlining/Stewardship | 32 |
| Congestion | 25 |
| GIS/Spatial Information for Improved Decision Making | 23 |
| Other Activities that Support State/Local/Tribal Planning Capacity Building | 21 |
| Travel Modeling | 17 |
| General STEP Comments | 17 |
| Safety Planning | 15 |
| Public Involvement, Environmental Justice, Visualization in Planning | 10 |
| Historic Preservation | 8 |
| US/Canada and US Mexico Border Planning | 7 |
| Freight Planning | 7 |
| General STEP Comments on Planning | 7 |
| Outdoor Advertising Control/Realty Program Management | 5 |
| General STEP Comments on Tools to Support Planning and Environment | 4 |
| National Security, Defense, and Interstate Planning | 3 |
