Table 8-1 Statistics on the Extent, Use, Condition, and Performance of the Transportation System
Wednesday, February 22, 2017
|
Total |
Coverage of existing statistics |
Major gaps in existing statistics |
Why the gaps matter |
|
Extent of and geo- graphic access to the transportation system
|
-
Multiple versions of the highway and rail networks
-
Detailed representation of the waterway network
-
Intermodal passenger con- nectivity database
-
National Transit Map
|
-
Piecemeal representation of intercity bus service coverage
-
Little data on social service and non-profit transportation coverage
|
-
Identify localities that are isolated from economic oppor- tunities, social services, and upward mobility
-
Identify portions of the transportation network that are vulnerable to disruption
|
|
Vehicle, aircraft, train, and vessel volumes
|
-
Number of vehicles on highway segments
-
Number of aircraft by airport; number of car- loadings by rail
segment; number of vessels by port and waterway
|
-
Inconsistent differentiation among types of highway vehicles (car, bus, truck)
-
Pipeline volumes by segment
|
-
Different vehicle types have very different consequences for traffic flow and congestion, pavement and bridge wear, exposure to safety risks, and air quality
-
Pipeline volumes affect markets of competing modes and exposure to safety risks
|
|
Condition and performance
|
-
Condition and reliability of highways by segment, transit by
property, and inland waterways by facility
-
Reliability of commercial aviation by flight and airport and by
causes of delay
|
-
Condition and reliability of freight railroads
-
Non-comparable throughput data for ports
-
Condition of urban bus and rail transit maintenance facilities, and rail transit infrastructure
-
Comprehensive metrics for identifying network resiliency
|
-
Identify bottlenecks, vulnerabilities to disruption, and other potential losses of efficiency in moving freight and passengers to guide investments in transportation facilities and rolling stock
|
