scholarly journals DEFINING PEDESTRIAN LEVEL OF SERVICE AT SIGNALIZED INTERSECTIONS THROUGH MODELLED PARAMETERS AND SOM CLUSTERING

2017 ◽  
Keyword(s):  
Signalized Intersections ◽  
Level Of Service ◽  
Pedestrian Level Of Service ◽  
Som Clustering

Modeling Pedestrian Level of Service at Signalized Intersection Under Mixed Traffic Conditions

2017 ◽  
Vol 2634 (1) ◽  
pp. 86-94 ◽  
Author(s):  
S. Marisamynathan ◽  
P. Vedagiri
Keyword(s):  
Linear Regression ◽  
Signalized Intersections ◽  
Level Of Service ◽  
Delay Model ◽  
Mixed Traffic ◽  
Threshold Values ◽  
User Perceptions ◽  
Traffic Conditions ◽  
Fcm Clustering ◽  
Pedestrian Level Of Service

Developing countries such as India need to have the proper pedestrian level of service (PLOS) criteria for various facilities to help in planning, designing, and maintaining pedestrian facilities. Thus, the objective of this study was to develop a suitable method for estimating the PLOS model under mixed traffic conditions and also to define threshold values for PLOS classification at signalized intersections. First, the data were collected with video and a user perceptions survey at eight selected signalized intersections in Mumbai, India. Second, pedestrian crossing behaviors were modeled according to arrival pattern, crossing speed, noncompliance behavior, and pedestrian–vehicular interaction. Third, a pedestrian delay model was proposed by considering crossing behavior variations and subsequent validation with field data. Fourth, significant variables were identified on the basis of the Pearson’s correlation test with user’s perceptions score. Fifth, the conventional linear regression (CLR) technique was explored to determine the PLOS. To overcome the limitations of the CLR technique, fuzzy linear regression (FLR) was done to develop a PLOS model that fits mixed traffic conditions in India. Two models were validated, and their statistical performance results indicate that the FLR model predicts the PLOS score more precisely. Finally, k-means and fuzzy C-means (FCM) clustering techniques were applied to classify the PLOS score, and the results were compared by time complexity value and field values. The performance evaluation results indicate that the k-means method saves time but fails to produce more reliable threshold values, and the FCM method produces more accurate and efficient threshold values for the PLOS score at signalized intersections under mixed traffic conditions.

Design and Performance Analysis of Pedestrian Crossing Facilities for Continuous Flow Intersections

2005 ◽  
Vol 1939 (1) ◽  
pp. 133-144 ◽  
Author(s):  
Ramanujan Jagannathan ◽  
Joe G. Bared
Keyword(s):  
Continuous Flow ◽  
Level Of Service ◽  
Vehicular Traffic ◽  
Average Delay ◽  
Qualitative And Quantitative ◽  
Traffic Performance ◽  
Pedestrian Traffic ◽  
Pedestrian Level Of Service ◽  
And Performance ◽  
Pedestrian Crossing

Although concepts of the continuous flow intersection (CFI) have been around for approximately four decades, minimal or no literature describing studies that have analyzed pedestrian traffic performance at these intersections is available. Several studies have reported on the qualitative and quantitative benefits for the vehicular traffic performance of CFIs in comparison with the benefits for the vehicular traffic performance of conventional intersections but have provided minimal or no discussion about pedestrian traffic performance. As a novel intersection design, many important considerations are required to design pedestrian accesses and crossings at CFIs without compromising pedestrian safety and vehicular traffic performance. In this paper, the design methodologies for providing pedestrian access and related pedestrian signal timings are discussed. Modeling was conducted on three typical geometries for CFIs with base signal timings optimized for vehicular traffic performance. The results indicate an acceptable pedestrian level of service of B or C on the basis of the average delay per stop experienced by any pedestrian for pedestrian crossings at the typical CFI geometries modeled. All pedestrians served at the CFIs are accommodated within two cycles for a typical signal cycle length ranging from 60 to 100 s.

scholarly journals Is the indonesian regulation of standard level of service of a pedestrian path fulfill pedestrians’ convenience

2018 ◽  
Vol 147 ◽  
pp. 02003
Author(s):  
Amirotul Mahmudah ◽  
Slamet Legowo ◽  
Agus Sumarsono ◽  
Studyamadyakomunika Linta ◽  
Benny Irawan
Keyword(s):  
User Satisfaction ◽  
Government Regulation ◽  
Level Of Service ◽  
The West ◽  
The North ◽  
Commercial Area ◽  
Movement Characteristics ◽  
Study Results ◽  
Standard Level ◽  
Pedestrian Level Of Service

Indonesia published Regulation No: 03/PRT/M/2014 about the Pedestrian Level of Service (LOS), consist of pedestrian movement characteristics and sidewalk capacity, as like the Bangkok standard, there is no parameter that represents pedestrian interest. Australian standards develop a Level of Service with the main based on categories that relate with pedestrian convenience. Within this study, identifying Indonesian pedestrian interests done by measuring pedestrian perception of convenience. This study aims to check the suitability between this standard pedestrian LOS and pedestrian perception of convenience in a commercial area, Pasar Gede market. The study results, based on Indonesia regulation LOS, the pedestrian path around Pasar Gede market is categorized as level A at all sections, and this is the same as the Bangkok standards. According to the Australian’s standard, the LOS is an A for the West section, B for the North section, and C for the South section. The pedestrians have perceptions of moderately discomfort for all sections. This means that although the pedestrian path fulfills the level of service for Indonesian Government regulation, it does not fulfill user satisfaction. Therefore, the Indonesian LOS standard for pedestrian paths doesn’t provide equity for the pedestrian.

Evaluation of Walkability and Pedestrian Level of Service

2017 ◽  
pp. 30-57 ◽  
Author(s):  
Hediye Tuydes-Yaman ◽  
Pinar Karatas
Keyword(s):  
Public Transit ◽  
Research Effort ◽  
Sustainable Transportation ◽  
Clear Relationship ◽  
Level Of Service ◽  
Urban Regions ◽  
Pedestrian Level Of Service

Due to decreasing resources, living in urban regions focus on sustainability in many aspects, including transportation. Sustainable transportation encourages non-motorized modes of walking and cycling as well as public transit (which also relies on walking while accessing a station), as well. However, walking as a mode is still a big mystery itself that needs further attention and research effort especially in the evaluation part. So far, the planners have discussed the concepts of walking and walkability, while engineers have mostly focused on Pedestrian Level of Service (PLOS). The scope of the problem is reflected in the diversity, and consequent inconsistency, in the available PLOS methods, which is one of the problems addressed in this chapter. The second and the bigger problem is the gap between the planning and engineering approaches in evaluating PLOS and walkability producing no consensus or clear relationship between the two, even though they overlap greatly.

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