|
Topic |
Coverage of existing statistics |
Major gaps in existing statistics |
Why the gaps matter |
|
Safety |
-
Transportation fatalities and injuries for all modes.
-
Safety incidents involving hazardous materials; precursor events (close calls) for aviation, selected railroads and transit, and off-shore oil extraction and transport.
|
-
Risk factors.
-
Exposure by type of safety risk.
-
Precursor events (close calls) for most forms of surface transportation.
-
Disabilities and medical costs related to transportation injuries.
|
-
Effective reduction of trans- portation-related casualties and property loss depends on detailed understanding of safety risks and causes of safety incidents.
-
Measures of safety program effectiveness guide public investments and regulations.
|
Energy consumption, green house
gasses, air quality |
-
Air quality by type of pollutant and air shed.
-
Relationship of vehicle emis- sions to type of vehicle and vehicle speed.
|
-
In-use fuel economy and emissions.
-
Amount of vehicle travel by type of vehicle and vehicle speed in each air shed.
|
-
Estimates of air quality issues are based primarily on labora- tory conditions and assumed operating patterns and should be tested against actual operat- ing conditions.
|
Noise, water quality,
habitat dislocation |
-
Noise footprints around airports.
-
Environmental disruptions related to individual transporta- tion projects.
|
-
National and regional inventories of noise exposure from all modes.
-
Natural habitat disruption.
|
-
Geographic distributions of noise exposure and habitat disruption identify mitigation investment needs and target mitigation measures.
|
|
Community disruption |
-
Social and economic character- istics of populations adjacent to transportation facilities.
|
-
Social and economic connections among neighborhoods.
|
-
Improve planning to avoid or mitigate community disruption from transportation facilities and to provide physical connections between mobility-challenged citizens and services and employment opportunities.
|
