Acceleration noise and level of service of urban roads ‐ A case study

Babu, Y. Sudheer; Pattnaik, S. B.

doi:10.1002/atr.5670310307

Cited by 19 publications

(5 citation statements)

References 3 publications

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“…The polynomial quadratic relationship was therefore adopted in this study. Table (6) display model summary for the quadratic relationship between ln acceleration noise and traffic volume. Regression analysis conducted using curve fiting techniques provided by (SPSS V.26) software.…”

Section: Effect Of Traffic Volume On Transformed Acceleration Noisementioning

confidence: 99%

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Evaluation of Acceleration Noise Parameter as a Traffic Flow Performance Indicator for Multi-Lane Urban Highways

Naef¹,

Al-Taei²

2021

(AREJ)

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This study was conducted to use acceleration noise as an alternative measure to the level of service on multilane urban highways located within Kirkuk City. The study provides a simplified and easy way to evaluate the level of service (LOS) instead of the extended methodology proposed by the Highway Capacity Manual (HCM-2010). Ten (10) multi-lane urban segments were chosen within the study area for collecting the required field data. Moving Vehicle Method (MVM) with a digital camera equipped with a built-in GPS receiver were utilized to collect field data. Acceleration noise takes the form of an exponential function (y = e x ) when associated with traffic flow variables (traffic volume, density, and speed). Final results have revealed that acceleration noise could be used as a surrogate measuring the level of service for multi-lane urban highways within the ranges of the level of service LOS A-LOS C.

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Section: Effect Of Traffic Volume On Transformed Acceleration Noisementioning

confidence: 99%

“…Babu and Pattnaik, (1997) [6] examined the relationship between many speed-variation measures including acceleration noise, standard deviation of speed, coefficient of variation of speed and traffic congestion. Urban roads with different geometric have been studied.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Acceleration Noise Parameter as a Traffic Flow Performance Indicator for Multi-Lane Urban Highways

Naef¹,

Al-Taei²

2021

(AREJ)

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“…In fact, acceleration noise was proposed nearly a half century ago as a parameter that might be employed to characterize the driver-car-road complex under various conditions (9). Since that time, several researchers have proposed acceleration noise as a possible measure of traffic flow quality (7,8,10,11). Based on these previous research results, this study also presumes that acceleration noise is a potential indicator of traffic flow quality experienced by individual drivers and that it should be explicitly considered in establishing a measure of service quality.…”

Section: Proposed Traffic Flow Quality Indexmentioning

confidence: 99%

Variability in Traffic Flow Quality Experienced by Drivers: Evidence from Instrumented Vehicles

Ko¹,

Guensler²,

Hunter

2006

Transportation Research Record: Journal of the Transportation R

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Freeway operating conditions are typically evaluated using the level of service (LOS) concept, which is defined according to the macroscopic traffic parameter, density. Although traffic density may provide general estimates of current traffic conditions, this parameter generally fails to communicate the variability in the quality of traffic flow experienced by individual drivers. This variability may be caused by factors that are not effectively being captured by density, such as travel lane, vehicle position within a platoon, characteristics of roadway geometry, etc.This paper investigates the variability of traffic flow quality as indicated by measurements of speed and acceleration noise (standard deviation of acceleration) using field data obtained from instrumented vehicles equipped with global positioning system (GPS) devices. The microscopic measures observed from individual vehicles are compared with density-based LOS, which are calculated with data from the Atlanta, GA traffic monitoring system. This comparison reveals that under the same LOS condition, drivers may experience significant differences in the quality of traffic flow. In addition, the comparison indicates that drivers under different density based LOS conditions may experience a similar level of traffic flow quality. The variability generally becomes larger as traffic conditions worsen.

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“…In fact, acceleration noise was proposed nearly half a century ago as a parameter that might be used to characterize the driver-car-road complex under various conditions (9). Since that time, several researchers have proposed acceleration noise as a possible measure of traffic flow quality (7)(8)(9)(10)(11). On the basis of these previous research results, this study also presumes that acceleration noise is a potential indicator of traffic flow quality experienced by individual drivers and that it should be explicitly considered in establishing a measure of service quality.…”

Section: Proposed Traffic Flow Quality Indexmentioning

confidence: 99%

Variability in Traffic Flow Quality Experienced by Drivers

Guensler

Hunter

2006

Transportation Research Record: Journal of the Transportation R

View full text Add to dashboard Cite

Freeway operating conditions are typically evaluated on the basis of the level-of-service (LOS) concept, which is defined according to traffic density, a macroscopic traffic parameter. Although density may provide general estimates of current traffic conditions, it generally fails to communicate the variability in the quality of traffic flow experienced by individual drivers. This variability may be caused by factors that are not effectively captured by density, such as travel lane, vehicle position within a platoon, and characteristics of roadway geometry. This paper investigates the variability of traffic flow quality as indicated by measurements of speed and acceleration noise (standard deviation of acceleration) on the basis of field data obtained from instrumented vehicles equipped with Global Positioning System devices. The microscopic measures observed from individual vehicles are compared with density-based LOS, which are calculated with data from the Atlanta, Georgia, traffic-monitoring system. The comparison indicates that under the same LOS condition, drivers may experience significant differences in the quality of traffic flow. In addition, the comparison indicates that drivers under different density-based LOS conditions may experience a similar level of traffic flow quality. The variability generally becomes larger as traffic conditions worsen.

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Acceleration noise and level of service of urban roads ‐ A case study

Cited by 19 publications

References 3 publications

Evaluation of Acceleration Noise Parameter as a Traffic Flow Performance Indicator for Multi-Lane Urban Highways

Evaluation of Acceleration Noise Parameter as a Traffic Flow Performance Indicator for Multi-Lane Urban Highways

Variability in Traffic Flow Quality Experienced by Drivers: Evidence from Instrumented Vehicles

Variability in Traffic Flow Quality Experienced by Drivers

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