Enum FundamentalDiagram 

pub enum FundamentalDiagram {
    Greenshields,
    Underwood {
        k_opt: Option<f64>,
    },
    Triangular,
    FreeFlow,
    Weidmann,
}

Speed-density relationship (fundamental diagram) for a transport link.

Variants

Greenshields

Underwood

Fields

k_opt: Option<f64>

Triangular

FreeFlow

Weidmann

Weidmann (1993) pedestrian speed-density relationship.

Uses density in ped/m² (not veh/km/lane). The jam_density parameter passed to speed() is ignored; the Weidmann jam density of 5.4 ped/m² is used instead.

Important: when using this variant, density_per_km is reinterpreted as density in ped/m².

Implementations

impl FundamentalDiagram

pub fn speed( &self, density_per_km: f64, free_flow_speed: f64, jam_density: f64, ) -> f64

Compute speed (m/s) given density (veh/km/lane), free-flow speed (m/s), and jam density.

Trait Implementations

impl Clone for FundamentalDiagram

fn clone(&self) -> FundamentalDiagram

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FundamentalDiagram

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for FundamentalDiagram

fn eq(&self, other: &FundamentalDiagram) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FundamentalDiagram

impl StructuralPartialEq for FundamentalDiagram