Definitions for "Level of Service"
Related Terms:
Los, Traffic calming, Arterial street, Freeway, Arterial, Design speed, Traffic management, Expressway, Motorway, Arterial highway, Congestion pricing, Road, Carriageway, Local street, Trunk road, Bus rapid transit, Highway, Interchange , Functional classification, Roadway, Gridlock , Overpass, Frontage road, Ramp meter, Parkway, Footpath, Brt, Toll road, Dual carriageway, Street, Roundabout, Bus lane, Modern roundabout, Bicycle lane, Collector, Ramp, Atc, High occupancy vehicle lane, Tcm , Peak hour, Grade separation, Thoroughfare, Transportation control measures, Hov, Shoulder, Congestion, Home zone, Travel demand management, Transportation demand management, Corridor
A set of qualitative descriptions of a transportation system's performance. The Highway Capacity Manual defines levels of service for intersection and highway operations, with ratings that range from A (best) to F (worst).
LOS is a rating of the effectiveness of a highway in serving traffic. Level of Service is measured on a scale from A to F with "A" categorizing free flowing traffic and "E" and "F" categorizing congested conditions. LOS is determined based in part on the ratio of the peak hour/peak direction traffic volume on a road and the hourly traffic capacity of the road. LOS F indicates that peak hour traffic volumes are greater than the capacity of the road. For example, if the northbound lanes of road have the ability to carry 10,000 vehicles per hour (its capacity), then any hourly traffic volume of 10,000 vehicles or greater would operate at LOS F and drivers would experience high levels of congestion.
A transportation-related term that describes the operating conditions a driver will experience while traveling on a particular street of highway.
The percentage of total calls answered within a specific time, such as "80% in 1 minute." Also called telephone service level, this is a commonly reported ACD statistic. Level of service is also used to define a Service Desk/Help Desk's quantitative goals, such as "average speed of answer (ASA) goal = 30 seconds. Level one -see first-level support. Level two - see second-level support. Level three - see third-level support.
An index of the operational performance of traffic on a given traffic lane, carriageway, road or intersection, based on service measures such as delay, degree of saturation, density and speed during a given flow period.
The quality of service provided by a facility under a given set of operating conditions ranging from A (the best LOS) to F (the worst LOS). The LOS thresholds for purposes of this Plan are listed on page 4.
The ‘Level of Service' is a grading system developed by the transportation profession to quantify the degree of comfort (including such elements as speed, travel time, number of stops, total amount of stopped delay, and impediments caused by other vehicles) afforded to drivers as they travel through an intersection or roadway segment. LOS is expressed as a letter grade that ranges from "A", indicating that drivers will experience little, if any delay, to "F", indicating significant traffic congestion and driver delay will occur.
Combinations of operating conditions that can occur on a given lane or roadway when it is accommodating various traffic volumes.
Operating conditions within a stream of traffic describing safety, traffic interruptions, speed, freedom to maneuver, comfort and convenience. Six levels of service are defined, designated A through F, with A representing the best conditions and F the worst
an abstract notion of how many and how much service a particular user receive's
A qualitative measure describing traffic conditions along a given roadway or at a particular intersection, including travel speed and time, freedom to maneuver, traffic interruptions, and comfort and convenience as experienced and perceived by motorists and passengers. Six levels are defined from A to F, with A representing the best conditions and F the worst.
A rating system used by traffic engineers as a qualitative measure describing operational conditions along a segment of roadway. This measure is generally associated with a roadway's ability to provide adequate capacity for volume of traffic (number of vehicles) using the road. The six levels are designated "A" through "F".
Refers to a standard measurement used by planners which reflects the relative ease of traffic flow on a scale of A to F with free-flow being rated LOS A and congested conditions rated as LOS F. More information at http://www.planning.org/thecommissioner/19952003/spring02.htm
An estimate of the effectiveness of a roadway to carry traffic, usually under anticipated peak traffic conditions. Level of Service efficiency is generally characterized by the letters A through F, with LOS A describing free flow traffic conditions and LOS F describing jammed or grid lock conditions.
A qualitative measure describing operational conditions within a traffic stream in terms of speed and travel time, freedom to maneuver, traffic interruptions, comfort and convenience, and safety. Level A denotes the best traffic conditions while Level F indicates gridlock. An Environmental Impact Report (EIR) for a development proposal evaluates the impact the development will have on the LOS standards for police, fire, utilities, parks, schools and traffic in the effected area.
A quality measure describing operational conditions within a traffic stream generally in terms of speed and travel time, freedom to maneuver, traffic interruptions, and comfort and convenience. Levels range from LOS A, the best, where a driver is unimpeded by other vehicles, to LOS F where flow is unstable and vehicle delay is high.
The quality measure of how well conditions provide for road users. For motor traffic it mainly assesses interruptions to free traffic flow. For cycling, other factors seem to be more important such as perceived safety, comfort, and directness of route. Refer to section 9.5
A qualitative measure describing a range of traffic operating conditions such as travel speed and time, freedom to maneuver, traffic interruptions, and comfort and convenience as experienced and perceived by motorists and passengers. Six levels are defined from A to F, with A representing the best range of conditions and F the worst.
A qualitative measure of traffic conditions generally described as speed and travel time, freedom to maneuver, traffic interruptions, comfort and convenience, and safety.
A measure of the quality of operation of a transportation facility, with Level of Service â€A†being very good operation with few traffic delays, and Level of Service “F†being severely congested operation with large traffic delays.
An indicator of the extent or degree of service provided by, or proposed to be provided by, a facility. Level of service (LOS) indicates the capacity per unit of demand for a public facility.
A qualitative measure describing operational road (traffic) conditions and the perception of motorists of the existing conditions. Six levels of service are defined for each type of facility, ranging from A to F, with level of service A representing the best operating conditions and level of service F the worst.
A qualitative measure describing operational conditions within a traffic stream. (i.e. A, B, C, D, E, F) Level of Service (LOS) = Demand Volume / Service Volume (Capacity) = V/C ratio on freeways. On arterial streets, LOS is measured by driver delay at signalized intersections.
A rating system used by traffic engineers to determine a roadway's ability to provide adequate capacity for the volume of traffic (number of vehicles) using the road.
A set of characteristics that indicate the quality and quantity of transportation service provided, including characteristics that are quantifiable and those that are difficult to quantify.
a term used by transportation engineers to indicate that traffic is moving at ideal, average, or poor efficiency and measured on a grade scale of “A†through “Fâ€.
A qualitative measure that characterizes operational conditions within a traffic stream and their perception by motorists and passengers. The descriptions of LOS categories characterize traffic flow conditions in terms of such factors as speed, travel time, freedom to maneuver, traffic interruptions, comfort and convenience. The LOS categories range from "A", which is full free flow traffic conditions, to "F" which is complete gridlock. The most commonly desired LOS is C, which signifies full but constant traffic flow with only occasional interruptions.
the level of service is a mechanism used by highway departments to determine if a road is operating at ideal, average, or poor efficiency. Termed level of service, each highway is given a grade from A to F that indicates how well the roadway is serving its intended traffic. Roads with a level of service "F" are generally the ones with major traffic issues and are generally prioritized for improvements and innovations to make the roadway better.
A measure (usually expressed as a percentage) of satisfying demand through inventory or by the current production schedule in time to satisfy the customers' requested delivery dates and quantities. In a make-to-stock environment, level of service is sometimes calculated as the percentage of orders picked complete from stock upon receipt of the customer order, the percentage of line items picked complete, or the percentage of total dollar demand picked complete. In make-to-order and design-to-order environments, level of service is the percentage of times the customer-requested or acknowledged date was met by shipping complete product quantities. Syn: measure of service, service level.
A qualitative measure of the effect of a number of traffic factors, including speed and travel time, traffic interruptions, freedom to maneuver, safety, driving comfort and convenience, and traffic volume. These factors are used to measure the functioning of a road or intersection with traffic, and the resulting level of service is expressed by a rating of "A" (best) through "F" (worst).
Level of service is a measure by which transportation planners reckon the quality of service on transportation devices, or transportation infrastructure, generally linked to transportation time (the shorter, the better) and thus to speed.
Amount of fire prevention and fire suppression supplied; may be expressed several ways (e.g., percent of people or buildings protected, area protected, dollar value of property protected, firefighters per capita, water flow capability).