Select a question topic:
Question: What are the differences between TREDIS and C11 in terms of measurements and output of market accessibility, reliability, and connectivity?
Answer: The C11 tools expand upon the current Accessibility, Connectivity, and Reliability capabilities in TREDIS.
TREDIS uses a similar methodology to the C11 tools to calculate the Wider Economic Benefits. However it applies an industry elasticity factor since each industry responds differently to cost savings (Reliability) and productivity improvements (Accessibility and Connectivity). The C11 tools just provide a generalized productivity measure without regard to industry response.
In addition TREDIS accounts for allocation of benefits by including a “trip allocation” input to determine the % of trips internal, external, outbound, and inbound. The C11 tools do not include this capability.
Note: All of the C11 tools methodology is included in TREDIS 5.0l.
Note: The latest release of TREDIS now includes the C11 (also known as EconWorks) methodology.
Question: Is TREDIS a travel demand model or land use model?
Answer: No. TREDIS is used in conjunction with a travel demand model or land use model. Outputs from those models can be inputs to TREDIS.