User:Subs5/Segment speed tracking

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< User:Subs5

Revision as of 16:58, 9 March 2018 by Sketch (talk | contribs) (more refinements)

Propose to add a new section to the HOV wazeopedia

Segment speed tracking

As part of the HOV/Express Lane process, Waze computes a maximum of two separate road speeds per segment during the user drive evaluation process[1]: the "entire segment" speed and up to one single-lane speed. While the Waze editor interface allows the addition of multiple single-lane restrictions (e.g., HOV left lane, regular traffic center lane, and Bus right lane), the user drive evaluation process does not support three different speeds on a single segment. Therefore, do not add more than one single-lane restriction on any segment.

Speed measurements are normally gathered per lane, not per vehicle or restriction type[1]—for example, an HOT or Express road segment allowing both toll free and tolled traffic in the same lane gathers only one set of average speed data (instead of keeping separate times for private vehicle, taxi, electric vehicle, etc.). This makes sense, as vehicles in the lane are traveling together as a single pack. In other words, the complexity of restrictions in a single lane does not matter—as long as only one single-lane restriction set is used, speed data will be collected properly.

  1. 1.0 1.1 With one exception: a separate set of speed data is kept for the motorcycle vehicle type.

This is for the Road segment wazeopedia page:

Speed data in normally collected by the segment with a maximum of two speeds for any road segment to account for lane (right/center/left) restrictions. A motorcycle's ability to conduct lane splitting can alter their expected estimated time of arrival; therefore, motorcycle speeds are the only known exception for a vehicle type having different speed history. Motorcycle speeds are kept alongside the normal two sets of speed data for private/taxis/electric vehicles. The routing server uses the appropriate stored speed data and current conditions for calculating the best routes and estimated time of arrival based on the user's selected vehicle type.