| 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 |
