scholarly journals AVL and Monitoring for Massive Traffic Control System over DDS

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Basem Almadani ◽  
Shehryar Khan ◽  
Muhammad Naseer Bajwa ◽  
Tarek R. Sheltami ◽  
Elhadi Shakshuki
Keyword(s):  
Real Time ◽  
Traffic Control ◽  
Large Scale ◽  
Huge Number ◽  
Management Group ◽  
Communication Paradigm ◽  
Time Requirements ◽  
Traffic Control System ◽  
Data Distribution Service ◽  
The City

This paper proposes a real-time Automatic Vehicle Location (AVL) and monitoring system for traffic control of pilgrims coming towards the city of Makkah in Saudi Arabia based on Data Distribution Service (DDS) specified by the Object Management Group (OMG). DDS based middleware employs Real-Time Publish/Subscribe (RTPS) protocol that implements many-to-many communication paradigm suitable in massive traffic control applications. Using this middleware approach, we are able to locate and track huge number of mobile vehicles and identify all passengers in real-time who are coming to perform annual Hajj. For validation of our proposed framework, various performance matrices are examined over WLAN using DDS. Results show that DDS based middleware can meet real-time requirements in large-scale AVL environment.

Real-Time Implementation of Adaptive Traffic Control System using IoT

2021 ◽  
Author(s):  
Mustafa Shakir ◽  
Sohaib Aslam ◽  
Syed Abdul Wali ◽  
Fakharul Zaman ◽  
Muhammad Qaiser ◽  
...  
Keyword(s):  
Control System ◽  
Real Time ◽  
Traffic Control ◽  
Traffic Control System ◽  
Adaptive Traffic Control

Lessons from a Large-Scale Experiment on the Use of Smartphone Apps to Collect Travel Diary Data: The “City Logger” for the Greater Golden Horseshoe Area

2020 ◽  
Vol 2674 (7) ◽  
pp. 299-311
Author(s):  
Ahmadreza Faghih Imani ◽  
Chris Harding ◽  
Siva Srikukenthiran ◽  
Eric J. Miller ◽  
Khandker Nurul Habib
Keyword(s):  
Real Time ◽  
Travel Behavior ◽  
Large Scale ◽  
Smartphone Apps ◽  
Systematic Assessment ◽  
Travel Diary ◽  
Scale Experiment ◽  
App Design ◽  
The Impact ◽  
The City

Smartphones offer a potential alternative to collect high-quality information on the travel patterns of individuals without burdening the respondents with reporting every detail of their travel. Smartphone apps have recently become a common tool for travel survey data collection around the world, especially for multiday surveys. However, there still exists a lack of systematic assessment of issues related to smartphone app-based surveys, such as the impact of app design or the recruitment method on the collected data. Through a large-scale experiment (named the City Logger), this paper assesses the data produced by the City Logger app, to better understand recruitment avenues (targeted invitation versus crowdsourcing), and examine differences in respondents’ travel behavior recruited through crowdsourcing methods. The paper also examines how app design, and particularly the user input method for trip validation, influences participants’ responses. The results indicate that, while crowdsourcing recruitment is promising, it might not yet be the best way to capture a true representation of the population. For app design, a combination of real-time and travel diary approaches is recommended. An ideal app would prompt users real-time and create a travel diary, so users can validate, edit, or delete the recorded information.

A DDS-Based Interoperation Framework of Large-Scale Simulation System

2013 ◽  
Vol 462-463 ◽  
pp. 746-749
Author(s):  
Ru Kui An ◽  
Chang Feng Xing ◽  
Ling Wu ◽  
Li Gong
Keyword(s):  
Real Time ◽  
Time Management ◽  
Large Scale ◽  
Simulation System ◽  
Prototype System ◽  
Integration Framework ◽  
Management Ability ◽  
Communication Module ◽  
Communication Ability ◽  
Data Distribution Service

To integrating of combat simulation system in existence, the barrier of differences of runtime framework, connection protocols and integration framework among the simulation systems must be solved. HLA bridge is necessary when the different RTI implements, which decline the system performance. The Data Distribution Service (DDS), which is implemented with P/S mode, with the advantage of low coupled, strong scalability real-time and huge amount, seems an ideal solution to the problem. An integration framework based on DDS is approached, which inherits the real-time communication ability of DDS and the time-management and federation management ability of HLA, the prototype system proved the ability of the framework, and the semantics communication module of the system would be the next research topic.

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