Documentation

VT Planner Technical Glossary

Definitions for VT Planner demand, calculation, simulation, statistics, passenger-time, dispatch, and service-model terms.

Demand and Traffic

Term	Meaning in VT Planner
`Demand intensity`	A passenger arrival rate, shown for Standard demand as `% population / 5 min` and for Advanced periods as an absolute rate of `passengers / 5 min` for each origin.
`Incoming`	A trip that starts at an entrance and ends at another floor.
`Outgoing`	A trip that starts away from an entrance and ends at an entrance.
`Interfloor`	Any other origin-destination trip, including a trip between two entrance floors.
`OD`	Origin-destination. An Advanced period combines an arrival rate for each origin with destination probabilities for that origin.
`Entrance bias`	A relative positive weight used to distribute entrance-based demand between selected entrances.

Calculation Metrics

Term	Meaning in VT Planner
`RTT`	Round-trip time for a representative elevator cycle.
`Interval`	The analytical average time between successive elevator arrivals at the main service point or successive instances of car availability there. Outside that context, use passenger waiting and journey evidence instead.
`Handling capacity`	The number of passengers the group can transport in a reference period, commonly five minutes. It is also shown as a percentage of population.

Interval and handling capacity are sizing indicators. Interval is distinct from the simulated Main-terminal departure headway. Neither interval nor handling capacity is a general quality-of-service metric for multiple entrances, destination dispatch, or complex simulation scenarios; use passenger waiting, journey, completion, and queue evidence.

Calculation Passenger Times

Term	Meaning in Calculation
`Average waiting time (AWT)`	An analytical waiting estimate derived from interval and loading assumptions.
`Average transit time (ATT)`	An analytical estimate of the time from entering the car to reaching the average destination, including modeled travel, stops, and passenger transfer time.
`Average time to destination (ATTD)`	`AWT + ATT`, ending when the destination doors begin opening.
`Average journey time (AJT)`	`ATTD` plus the final passenger-transfer allowance.

Simulation Passenger Times

Term	Meaning in Simulation
`Average Waiting Time (AWT)`	Time from passenger arrival at each landing until the effective boarding door cycle begins opening, accumulated across transfer legs.
`Time to Board`	Time from passenger arrival at each landing until actual boarding, accumulated across transfer legs.
`Transit`	Time from actual boarding to alighting, accumulated across journey legs.
`Journey`	Time from initial passenger arrival through final alighting, including waits, boarding, travel, and transfer legs.

Simulation and Statistics

Term	Meaning
`Dispatcher`	The strategy that assigns passenger or hall calls to cars during Simulation.
`ETA`	The default dispatcher, oriented around the estimated time for a car to reach a conventional landing call.
`ACA`	The VT Planner destination-dispatch option: the destination is available at the landing and a car is allocated before boarding.
`Coincident bonus`	An ETA preference for a car already due to stop at the requested floor, where one stop may serve coincident calls.
`Seed`	A value that reproduces the same random realization when the rest of the scenario is unchanged.
`Percentile`	A threshold at or below which a stated proportion of observations falls. `P95`, for example, is the value at or below which 95% of observations fall.
`Confidence interval`	A range that quantifies sampling uncertainty around a multi-run estimate under the modeled assumptions.
`Completion rate`	The proportion of generated passengers that completed their trips within the result horizon.
`Main-terminal departure headway`	The observed spacing between qualifying departures from the main terminal in a Simulation. It is distinct from analytical interval.
`Partial result`	A valid result that covers less than the requested duration.
`Replay sample`	One valid trace selected from a Multi-run simulation result; it is not the average simulation.

Service Model

Full group service: every car belongs to the same group and serves the full floor set.
Manual zoning: cars and floors are assigned to explicit service zones.
Transfer floor: a floor shared by zones where a simulated passenger can alight, wait, and board for another leg.
Destination dispatch: the passenger enters the destination before boarding and is assigned to a specific car.
Load bypass: behavior that can prevent a sufficiently loaded car from accepting more calls.

Technical Basis

Terminology is informed by ISO 8100-32 and CIBSE Guide D as technical context. These references help frame analysis methods and traffic metrics; they do not imply certification, compliance, or validation of a particular project.