"TABLE 1-1  Data Topics, as Amended by SAFETEA-LU",
Subtitle,Topic
A,Productivity in various parts of the transportation sector
B,Traffic flows for all modes of transportation
C,Other elements of the Intermodal Transportation Database established under subsection (e)
D,Travel times and measures of congestion
E,Vehicle weights and other vehicle characteristics
F,"Demographic, economic, and other variables influencing traveling behavior, including choice of transportation mode, and goods movement"
,
G,Transportation costs for passenger travel and goods movement
H,Availability and use of mass transit (including number of passengers served by each mass transit authority) and other forms of for-hire passenger travel
,
I,Frequency of vehicle and transportation facility repairs and other interruptions of transportation service
J,"Safety and security for travelers, vehicles, and transportation systems"
K,Consequences of transportation for the human and natural environment
L,"The extent, connectivity, and condition of the transportation system, building on the National Transportation Atlas Database developed under subsection (g)"
,
M,Transportation-related variables that influence the domestic economy and global competitiveness