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use strum::{AsRefStr, Display, EnumString};
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Display, EnumString, AsRefStr)]
#[strum(serialize_all = "snake_case")]
#[repr(u8)]
pub enum RoadClass {
/// A restricted access major divided highway, normally with 2 or more
/// running lanes plus emergency hard shoulder. Equivalent to the Freeway, Autobahn, etc..
Motorway,
/// The link roads (sliproads/ramps) leading to/from a motorway from/to a
/// motorway or lower class highway. Normally with the same motorway restrictions.
MotorwayLink,
/// The most important roads in a country's system that aren't motorways.
/// (Need not necessarily be a divided highway.)
Trunk,
/// The link roads (sliproads/ramps) leading to/from a trunk road
/// from/to a trunk road or lower class highway.
TrunkLink,
/// The next most important roads in a country's system.
/// (Often link larger towns.)
Primary,
/// The link roads (sliproads/ramps) leading to/from a primary road
/// from/to a primary road or lower class highway.
PrimaryLink,
/// The next most important roads in a country's system.
/// (Often link towns.)
Secondary,
/// The link roads (sliproads/ramps) leading to/from a secondary road
/// from/to a secondary road or lower class highway.
SecondaryLink,
/// The next most important roads in a country's system.
/// (Often link smaller towns and villages)
Tertiary,
/// The link roads (sliproads/ramps) leading to/from a tertiary road
/// from/to a tertiary road or lower class highway.
TertiaryLink,
/// The least important through roads in a country's system.
/// i.e. minor roads of a lower classification than tertiary, but which serve a
/// purpose other than access to properties. (Often link villages and hamlets.)
///
/// The word 'unclassified' is a historical artefact of the UK road system and does
/// not mean that the classification is unknown; you can use highway=road for that.
Unclassified,
/// Roads which serve as access to housing, without function
/// of connecting settlements. Often lined with housing.
Residential,
// Special Road Types
/// For living streets, which are residential streets where pedestrians have legal
/// priority over cars, speeds are kept very low.
LivingStreet,
/// For access roads to, or within an industrial estate, camp site, business park, car park,
/// alleys, etc. Can be used in conjunction with service=* to indicate the type of usage
/// and with access=* to indicate who can use it and in what circumstances.
Service,
/// For roads used mainly/exclusively for pedestrians in shopping and some residential areas
/// which may allow access by motorised vehicles only for very limited periods of the day.
///
/// To create a 'square' or 'plaza' create a closed way and tag as pedestrian and also with
/// area=yes.
Pedestrian,
/// Roads for mostly agricultural or forestry uses.
/// To describe the quality of a track, see tracktype=*.
///
/// Note: Although tracks are often rough with unpaved surfaces, this tag is not describing
/// the quality of a road but its use.
///
/// Consequently, if you want to tag a general use road, use one of the general highway
/// values instead of track.
Track,
/// A course or track for (motor) racing
Raceway,
/// A busway where the vehicle guided by the way (though not a railway)
/// and is not suitable for other traffic.
///
/// Note: this is not a normal bus lane, use access=no, psv=yes instead!
BusGuideway,
/// A dedicated roadway for bus rapid transit systems
Busway,
/// For runaway truck ramps, runaway truck lanes, emergency escape ramps,
/// or truck arrester beds. It enables vehicles with braking failure to safely stop.
Escape,
/// A road/way/street/motorway/etc. of unknown type.
///
/// It can stand for anything ranging from a footpath to a motorway.
/// This tag should only be used temporarily until the road/way/etc.
/// has been properly surveyed.
///
/// If you do know the road type, do not use this value, instead use one
/// of the more specific highway=* values.
Road,
}
impl RoadClass {
#[inline]
pub const fn weighting(&self) -> u32 {
match self {
RoadClass::Motorway => 1,
RoadClass::MotorwayLink => 2,
RoadClass::Trunk => 3,
RoadClass::TrunkLink => 4,
RoadClass::Primary => 5,
RoadClass::PrimaryLink => 6,
RoadClass::Secondary => 7,
RoadClass::SecondaryLink => 8,
RoadClass::Tertiary => 9,
RoadClass::TertiaryLink => 10,
// Residential / Assoc.
RoadClass::Residential => 10,
RoadClass::Busway => 10,
RoadClass::BusGuideway => 10,
RoadClass::Unclassified => 10,
// Misc / Service. (Shouldn't be impossible to traverse, just difficult.)
RoadClass::LivingStreet => 50,
RoadClass::Service => 50,
RoadClass::Road => 50,
RoadClass::Raceway => 100,
RoadClass::Escape => 100,
RoadClass::Track => 100,
RoadClass::Pedestrian => 100,
}
}
}