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Online sites:
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Offline sites:
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- Road geometry and surface data (Infrastructure):
- number of lanes;
- change in number of lanes;
- presence of on/off ramp;
- presence of weaving section;
- width of the right (and left) shoulder;
- presence of emergency phones;
- Toll area;
- presence of a viaduct, bridges;
- presence of a baffle board / other type of visible barriers close to roadway;
- pavement condition (ruts, etc.).
- Vehicle attributes (Classes of vehicles: Public, private, emergency, HOV):
- Length and width
- Maximum desired speed
- Minimum distance between vehicles
- Fuel consumption
- Emission parameters
- Traffic data (per direction, and, when available, per lane):
- mean speed of all vehicles per minute, per direction and lane;
- mean volume per minute;
- truck percentage per minute;
- mean speed difference between cars and trucks;
- density;
- volume / capacity ratio;
- standard deviation of the mean speed;
- Incident data:
- location and direction of traffic, where the incident occurred;
- date and time of the incident (preferably the exact minute);
- severity/nature of the incident;
- GPS registration
- verification of incident data;
- interaction with urban networks;
- Congestion data:
- time and place of occurrence;
- length of queue (each time unit);
- cause of congestion;
- GPS registration;
- interaction with urban networks;
- Weather data:
- weather conditions (e.g. visibility, precipitation, wind);
- condition of the road surface (e.g. dry, wet or black ice/snow).
- Data of Construction Phase:
- road works;
- construction events.
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