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  2. Level of service (transportation) - Wikipedia

    en.wikipedia.org/wiki/Level_of_service...

    Level of service (LOS) is a qualitative measure used to relate the quality of motor vehicle traffic service. LOS is used to analyze roadways and intersections by categorizing traffic flow and assigning quality levels of traffic based on performance measure like vehicle speed, density, congestion, etc.

  3. Levels of service - Wikipedia

    en.wikipedia.org/wiki/Levels_of_service

    Levels of service (LOS) is a term in asset management referring to the quality of a given service. Defining and measuring levels of service is a key activity in developing infrastructure asset management plans. [2] [3] [4] Levels of service may be tied to physical performance of assets or be defined via customer expectation and satisfaction.

  4. Level of service - Wikipedia

    en.wikipedia.org/wiki/Level_of_service

    Level of service may refer to: ... Level of service (transportation) in transportation and traffic; Something agreed on in a Service-level agreement (SLA)

  5. Traffic congestion - Wikipedia

    en.wikipedia.org/wiki/Traffic_congestion

    Qualitative classification of traffic is often done in the form of a six-letter A-F level of service (LOS) scale defined in the Highway Capacity Manual, a US document used (or used as a basis for national guidelines) worldwide. These levels are used by transportation engineers as a shorthand and to describe traffic levels to the lay public ...

  6. Intersection capacity utilization - Wikipedia

    en.wikipedia.org/wiki/Intersection_Capacity...

    The ICU method uses the Level of Service concept, in which reports on the amount of reserved capacity or capacity deficit. In order to calculate the Level of Service for the ICU method, the ICU for an intersection must be computed first. [3] ICU can be computed by: ICU = sum(max (tMin, v/si) * CL + tLi) / CL = Intersection Capacity Utilization

  7. Glossary of road transport terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_road_transport...

    See three-way junction 5-1-1 A transportation and traffic information telephone hotline in some regions of the United States and Canada that was initially designated for road weather information. A Access road See frontage road Advisory speed limit A speed recommendation by a governing body. All-way stop or four-way stop An intersection system where traffic approaching it from all directions ...

  8. Interstate Highway standards - Wikipedia

    en.wikipedia.org/wiki/Interstate_Highway_standards

    An Interstate Highway under construction , with both directions of traffic moved to one side of the roadway I-94 in Michigan, showing examples of non-interchange overpass signage in median, upcoming exit signage on right shoulder, a pre-1960 overpass with height restriction signage, newly installed cable median barrier, and parallel grooved ...

  9. American Association of State Highway and Transportation ...

    en.wikipedia.org/wiki/American_Association_of...

    Although AASHTO sets transportation standards and policy for the United States as a whole, AASHTO is not an agency of the federal government; rather it is an organization of the states themselves. Policies of AASHTO are not federal laws or policies, but rather are ways to coordinate state laws and policies in the field of transportation.