Calculates the percentage of the alignment that runs in dedicated right-of-way. Dedicated right-of-way could be a tunnel, elevated structure, transit street, at-grade track separated from traffic lanes or dedicated bus lanes.
System Travel Savings
Uses the Baltimore Metropolitan Council’s (BMC) Initiative to Simulate Individual Travel Events (InSite) model to calculate the travel time savings for an average transit rider living within ½ mile of a station. Travel time includes walking and/or driving to a station, wait time, and in-vehicle travel time.
Calculates the total transit travel time between key destinations for each corridor study. Transit travel time includes walk/drive time, wait time, and in-vehicle time.
Uses BMC’s InSite model to project daily boardings in 2045. The results were normalized per mile to compare Alternatives with different lengths.
Calculates the total number of connections to rail stations, frequent bus routes, and locally operated transit routes.
Measures the area within ½ mile of stations to represent the corridor’s walkable access area. The existing number of households, students, and future jobs within these areas were added separately. The results were normalized per mile to compare Alternatives with different lengths.
Transit-critical populations include zero-car households, people with low-incomes, people belonging to racial and ethnic minorities, people with limited English proficiency, adults age 65 and older, and people with disabilities. This MOE measures the area within ½ mile of stations to represent the corridor’s walkable access area. The results of transit-critical populations/households within this area were normalized per mile to compare Alternatives with different lengths.
Uses BMC’s InSite model to compare the total number of transit trips for those living within a specified area along the Alternatives to that of a 2045 no-build scenario. The difference, which is the net number of transit trips, is reported for each Alternative.
Utilizing engineering cost estimates from other projects from the region and the US, costs were assembled on a per-mile basis based on mode and guideway type. Adequate contingency factors were added due to the many unknowns at this early stage. Operating costs were estimated based on existing MDOT MTA operating and maintenance costs for bus and rail modes.
Estimates the total time to complete the project, measured from the completion of this study to opening. These durations are based on optimistic scenarios that there is no lag between phases and that all funding is secured without delay.
Fixed or Flexible Guideway
The space that is used by a transit vehicle where it cannot leave the rail line to deviate from the usual path of travel. A flexible guideway refers to the space that is used by a transit vehicle where it can deviate from the usual path of travel if needed. Flexible guideways can offer improved reliability to react to unplanned events.
Infrastructure under the street level is more difficult to measure and anticipate during the planning and design phases of a project. Tunneling projects carry increased complexity that unknown challenges may add to the cost and timeline of a project. The longer the proposed tunnel the higher the tunneling complexity.