Intercity Bus Research Articles

Service Quality Analysis of Intercity Bus Service of Pabna-Dhaka Highway

In developing country like Bangladesh, service quality improvement in public transportation is essential. That is why; we need strategic planning & adopting a quality management system for improving it. From the bus passengers viewpoints the public bus performance evaluate here. This paper deals with the quality improvement of the public transport system with take into consideration of the principal variables that dominance the perceived quality by users. Investigate factors that are affecting passengers perceived bus performance through an Ordered Probit Model (OPM). Take advantage of the Ordered Probt Model, data is analysed based on 297 samples raised from visibility survey with bus passengers during service testing period in Pabna to Dhaka route. The results of the study indicate that 79.79% of the respondents were male; 39.70% were aged between 20-29 years, 45.10% respondent indicated level of service as good; 50.50% respondent indicated level of service as moderate; and only 1% respondent indicated level of service of transit bus as bad. The Model (OPM) represent the quality appraisement process founded on a group of predefined variables. These variables choice is essential since they are used to explain the selection process to be modeled. In addition, the results revealed that punctuality & reliability, Seat comfort, noise level, physical appearance, frequency of bus service, seat availability and female harassment have a significant relationship with passengers satisfaction because they have a P-value smaller than α = 0.10 as the significant level is at 10% and Z-value is greater than 1.64. Attempts to improve on service quality to influence passenger’s satisfaction should be directed at those variables. The administration of Pabna city will be benefited from this strategies result consist of useful information to ensure the sustainability of the public transport system.

Bus stop passenger waiting simulation considering transfer passengers: A case study at Cheongju Intercity Bus Terminal

Bus stop passenger waiting simulation considering transfer passengers: A case study at Cheongju Intercity Bus Terminal

FEATURES OF CALCULATION OF THE TEMPERATURE STATE OF THE BUS SALON

The safety of passenger transportation is not only to prevent accidents but also to ensure the conditions of health and efficiency of passengers and driver and the comfort of moving, which is guaranteed by the microclimate in the bus and the driver's workplace. One of the principal indicators of the microclimate is the air temperature in the cabin. The purpose of the work is to develop and substantiate the method of calculating the temperature of the bus interior.Unorganized air exchange due to body leaks (infiltration) influence on the thermal regime of the bus interior. Air exchange due to body leaks depends linearly on the speed of the bus. Heat loss through the structural elements of the body linearly depends on the outside air temperature.The calculation of the thermal state of the bus interior, in principle, is reduced to the estimation of the calorific value of the liquid heater, taking into account all heat losses in the cabin. The method of calculation developed on two indicators: experimentally defined coefficient of heat transfer of a body of the city bus and its inverse size, the calculated value of thermal resistance of unit of the area of salon of the bus. The thermal regime of the interior of a city bus in the conditions of winter operation is significantly influenced by heat exchange through the openings of open doors at short-term service stops. As for long-distance coaches, open the passenger door is much less. Therefore at the operation of buses of the specified class, it is necessary to give in salon-fresh air which needs to be heated.Since there are statistics on heat transfer of the body of city buses, the temperature of their cabins proposes to be calculated by the heat transfer coefficient of the bus body.In this method, the calculation depends on the heat transfer coefficient of the body. The supply and heating of air for ventilation are not taken into account, as the passenger door carries out air exchange in the cabin during bus stops.As calculations have shown, heat losses primarily depend on the temperature difference between the outside air and in the cabin. However, statistics on heat transfer of intercity (tourist) bus bodies are not currently available in the available publications. The temperature condition of intercity buses must correspond to the following calculations, inverse to the heat transfer coefficient of the body - thermal resistance per unit area of the bus.The method of calculating the temperature of the bus interior is substantiated. For city buses should be based on the calculation of heat transfer coefficients body. The temperature condition of intercity buses must be calculated from the thermal resistance per unit area of the bus interior. We proved that heat losses in the cabin of intercity buses, compared to city buses, are much lower due to the absence of heat losses at service stops at the exit and entry of passengers, which account for more than half of all heat losses. To reduce heat loss, the use of double-glazed windows instead of single panes has a particularly significant effect.

Location and capacity decisions for electric bus charging stations considering waiting times

This research proposes a mixed integer-linear mathematical model for location and capacity decisions of electric bus charging stations in order to ensure the connectivity of the road network throughout a certain region. The routes followed by electric buses in a country, demand in each route and driving ranges of electric buses are considered so as to determine the locations and capacities of charging stations under limited waiting time constraints. We implement the model on a case study for intercity bus networks in Turkey and use the actual data of coach companies. The results provide optimal locations and capacities of charging stations with minimum cost. Moreover, sensitivity analysis is performed to analyze the effects of different parameters on the results. It is observed that driving ranges have the highest importance in the efficient use of electric buses, and charging durations, number of trips and service rates significantly affect capacities of stations.

ANALISIS MODEL ANTREAN NON-POISSON DAN UKURAN KINERJA SISTEM BERBASIS GUI WEB INTERAKTIF MENGGUNAKAN R-SHINY (Studi Kasus: Bus di Terminal Penggaron Kota Semarang)

Since September 1, 2018, The Semarang City Government has diverted intercity bus stop within the province from Terboyo Terminal to Penggaron Terminal, resulting in an imbalance of movement and capacity of the Penggaron Terminal which causes queue of bus. Non-Poisson queue is a queue model in which the arrival and service distribution do not have a Poisson distribution or do not have an Exponential distribution. The study was conducted on buses entering the Penggaron Bus Station with the destination of Jepara, Kedungjati, Juwangi, Yogyakarta, Kudus/Pati/Lasem, Pekalongan/Tegal, and Purwokerto/Purworejo. The main goal of this project is to identify the queue model of Non-Poisson and calculate the measure of system performance using the GUI R. One of the programs in R that can create an interactive web-based GUI (Graphical User Interface) is R-Shiny. R-Shiny is a toolkit of R programs that can be used to create online programs. The distribution test obtained using the EasyFit program. The bus queue model of Jepara is (DAGUM/GEV/4):(GD/∞/∞), the queue model of Kedungjati is (GPD/ DAGUM/1):(GD/∞/∞), the queue model of Juwangi is (GEV/ GEV/1):(GD/∞/∞), the queue model of Yogyakarta is (DAGUM/ DAGUM/1) : (GD/∞/∞), the queue model of Kudus/Pati/Lasem is (DAGUM/GEV/1):(GD/∞/∞), the queue model of Pekalongan/Tegal is (GEV/DAGUM/1):(GD/∞/∞), and the queue model of Purwokerto/Purworejo is (GPD/DAGUM/1) : (GD/∞/∞).

Co-benefits of reducing CO2 and air pollutant emissions in the urban transport sector: A case of Guangzhou

The transport sector has become an important source of urban greenhouse gas (GHG) and air pollutant emissions, with the continuous growth of transportation demand. The co-benefits of reducing GHG and air pollutant emissions in the transport sector are receiving more and more attention. Taking Guangzhou as the case study city, this study quantitatively analyzed the co-benefits of reducing CO2 and air pollutant emissions under the sustainable scenario in the transport sector by developing a quantitative analysis model based on the Long-range Energy Alternatives Planning (LEAP) framework. The co-benefits quantitative parameter and the co-benefits radar chart analysis method are used to identify and evaluate the generated co-benefits, and then the co-benefits generated by implementing the sustainable measures are discussed. The results show that adjusting transport modes and increasing the application of electricity are the two most effective measures for achieving the co-benefits of reducing CO2 and air pollutant emissions in the Guangzhou transport sector. Thus, these two measures are highly preferential for mitigating CO2 and air pollutant emissions. In addition, increasing the application of biofuel and hydrogen energy also has good co-benefits. However, increasing the application of Liquefied Natural Gas (LNG) has poor co-benefits. Promoting the utilization of LNG intercity buses, trucks, and cargo ships will lead to emission increases of CO and HC compared to the current policy scenario, and small emission reductions of CO2 and other air pollutants. Therefore, to promote the utilization of LNG vehicles and ships, it is necessary to cooperate with the use of air pollutant end removal devices and high-pressure direct injection (HPDI) gas engines.

Power-Saving Design of Radio Frequency Identification Sensor Networks in Bus Seatbelt Monitoring Systems.

Seatbelt state monitoring is important in intercity buses for passenger safety. This paper discusses the issues and challenges in power-saving design of radio frequency identification (RFID) sensor networks in bus seatbelt monitoring. A new design approach is proposed in this work for low-power layout and parameter setting in RFID sensor nodes in hardware and software design. A one-to-many pairing registration method is suggested between the concentrator and the seat nodes. Unlike using extra computer software to write seat identification (ID) into an integrated circuit (IC) card, the node ID in this project can be stored into the concentrator directly, which can reduce intermediate operations and reduce development costs. The effectiveness of the proposed low-power design approach is verified by some experimental tests.

Preface

After successfully held for three consecutive year, 2020 4th International Conference on Traffic Engineering and Transportation System (ICTETS 2020) was successfully held during August 21-23, 2020 in Guilin, China. ICTETS 2020 is to bring together innovative academics and industrial experts in the field of traffic engineering and transportation system to a common forum. The primary goal of the conference is to promote research and developmental activities in traffic engineering and transportation system and another goal is to promote scientific information interchange between researchers, developers, engineers, students, and practitioners working all around the world. The conference will be held every year to make it an enableing platform for people to share views and experiences in traffic engineering and transportation system and related areas.The conference featured four keynotes (40 minutes each, including Q&A) and oral presentations. The papers in the oral sessions were allotted 15 minutes each for presentation. There were a total of 110 participants, including keynote speakers, invited speaker, committee members, session chairs, authors, presenters and listeners. We are greatly honored to have invited Prof. Qizhou Hu from Nanjing University of Science and Technology, China and Prof. Dongfang Yang, from Guizhou University For Nationalities, China to serve as our General Conference Chair. The rest of the committee was composed from Turkey, Australia, India, Brazil, Malaysia, Iran and other countries.In the keynote presentations part, our beloved Conference Chair, Prof. Qizhou Hu was also invited to present his talk Thoughts on bicycle traffic in Europe. In the comprehensive analysis of the development trend of bicycle traffic in European countries, this paper analyzes the successful road of European bicycle development. In addition, we had A. Prof./Dr. Baohua Guo from Henan Polytechnic University, China to present his latest research on Rock mechanics in Road Engineering, Road safety and congestion control. The third keynote speaker. A. Prof. Shaopeng Zhong, Dalian University of Technology, China presented his latest research: Exploring the joint effect of shared autonomous vehicles and congestion pricing on regional job accessibility. On his speech, he presented shared autonomous vehicles (SAVs) and road congestion pricing studies. A. Prof./Dr. Law Teik Hua, from Road Safety Research Center, Engineering Faculty, Universiti Putra Malaysia, Malaysia, as the last keynote speaker, he presented an excellent talk: Development of safety performance index for intercity buses: An exploratory factor analysis approach. In the last part of the conference, all participants were invited to discuss and explore the academic issues after the presentations. The discussion was lasted for about 30-60 minutes. The conference provided a forum for discussing traffic engineering and transportation system and in particular for promoting the interchange of novel ideas and the presentations of the latest developments in this field. This conference will also provide an ideal environment to develop new collaborations and meet experts on the fundamentals, applications, and products of the mentioned fields.We are glad to share with you that we received lots of submissions from the conference and we selected a bunch of high-quality papers and compiled them into the proceedings after rigorously reviewed them. These papers feature following topics but are not limited to: Traffic Engineering, Transportation system and supply chain and other related topics. All the papers have been through rigorous review and process to meet the requirements of International publication standard.Lastly, we would like to express our sincere gratitude to the Chairman, the distinguished keynote speakers, as well as all the participants. We also want to thank the publisher for publishing the proceedings. May the readers could enjoy the gain some valuable knowledge from the proceedings. We are expecting more and more experts and scholars from all over the world to join this international event next year.The Organizing Committee of ICTETS 2020List of Committee member are available in the pdf.

Experimental and modelling research on coach passengers’ safety in frontal impacts

Road traffic accidents involving coaches do not happen very often, but they are very dangerous because they affect a large number of passengers. Coaches (or intercity buses) are not equipped with safety belt harnesses. Valid regulations do not impose any obligation on coach manufacturers to provide intercity buses with either two- or three-point safety belts. This fact may result from the unawareness of risks and injuries that might befall the passengers with no safety belts during accidents. That is the reason why this work aims to compare the aftermath of coach accidents with no safety belts and the ones with safety belts. A detailed aim of this research is to analyse the results of dynamic loads during a frontal impact exerted on coach passengers travelling with and without (two- and three-point) safety belts. This objective was achieved by performing experimental studies and modelling which focused on the process of dynamic load transfer on the human body during a traffic accident. The research was conducted parallel on an adult and a child. The equivalent of a 50th percentile male was a hybrid III dummy (M50), whereas a child at the age of about 10 was represented by a P10 dummy. A numerical model was generated and verified in experimental testing in the scope of kinematics. Also, the comparison of the recorded courses of forces, acceleration, and moments was conducted. The results obtained from the tests were analyzed regarding the injury criteria for head, neck, and thorax. It was observed that both for the two-point safety system and the lack of safety belts, there were high values of acceleration recorded in the centre of gravity of the head. On the basis of the investigations conducted, it was ascertained that only a three-point safety belt system ensures the satisfaction of all injury criteria within admissible standards both in the case of criteria defined in the rules no. 80 and the rules no. 94 determined by the United Nations Economic Commission for Europe. It is the three-point safety belt system which should be obligatory in all intercity buses.

Exposure levels of volatile organic compounds and potential health risks for passengers and workers at an intercity bus terminal

This work focuses on the concentration and health effects of volatile organic compounds (VOCs) at an intercity bus terminal in Taipei City, Taiwan. In this study, 36 VOCs were detected in the bus terminal, including 19 hazardous air pollutants. The measurement results indicate that ethanol, acetone, toluene, and methyl tert-butyl ether (MTBE) were the main VOCs dominating this bus terminal. Moreover, the average concentration of benzene, toluene, ethylbenzene, and xylene (BTEX) compounds was 106.0 μg/m3 inside the bus terminal, contributing to approximately 70% of the hazardous air pollutants. The measurement results suggest that traffic emissions, especially from diesel buses, were the major pollution sources in the bus terminal. The cancer risk for 1,3-butadiene, benzene, ethylbenzene, and naphthalene exceeded the suggested value by the U.S. EPA. In addition, the individual chronic hazard quotient of benzene was higher than the recommended level. The findings of this work imply that bus terminal workers face a potential health risk, which is a matter of concern.

Emergence of Blue Sky Over Delhi Due to Coronavirus Disease (COVID-19) Lockdown Implications

Due to coronavirus pandemic (COVID-19) prevailing in more than 210 countries, out of them only few have promulgated lockdown and on March 24, 2020 India also implemented lockdown for 21 days to prevent the community spread of virus among people. Since then, lockdown heavily restricts travel movements of flights, rail, intercity bus services besides industrial activity halt throughout the country. The significant improvement in the air quality of Delhi region was observed due to strict implementation of lockdown. During the lockdown period, improvement in ambient air quality helped us in circumventing the coronavirus community spread. The preliminary results showing the decrease in horizontal advection of pollutants has given an opportunity to understand the background concentrations of air pollutants over Delhi. To analyse this peculiar situation, we have assessed the pollutants datasets collected by twelve different online ambient air quality monitoring stations (AQMS) of Central Pollution Control Board (CPCB), New Delhi, India and observed a colossal improvement in the ambient air quality. The analysis of data confirms the sharp decline in concentrations (nearly 200%) of PM2.5 and PM10. The concentration of nitrous oxides (NOx), recorded its maximum (342 ppb) on 12 January 2020 in CRRI–Mathura Road, Delhi with the lowest value as 24 ppb on 30 March 2020 (reduced to nearly 14 times of the peak value). In the triad of this infectious disease, the role of environment is not linked better however, the ground reality cannot be ignored due to environment around us receives, maintains, protects and transports the aetiological agents to host prevailing in polluted environment which makes our lungs more susceptible to viral attacks. Therefore, a cleaner environment would prove to be an effective measure to halt and reduce the transmission of viral infections.

Quadruple therapy for asymptomatic COVID-19 infection patients

ABSTRACT Introduction The novel coronavirus (COVID-19) is currently in epidemic stage. After large-scale interpersonal infection, asymptomatic patients appear. Whether asymptomatic patients are contagious or not and whether they need medication are the arguments among clinical experts. Areas covered This paper reports a special asymptomatic couple with COVID-19, of which the male patient is an intercity bus driver but has not induced confirmed infection of his 188 passengers. The patients were treated with four combinations of lopinavir/ritonavir tablets, arbidol tablets, Lianhuaqingwen granules, and recombinant human interferon-α2b (IFN-α2b) injection via aerosol. Their clinical characteristics and medication were summarized and analyzed. Expert opinion The two asymptomatic patients far away from Wuhan did not seem to be highly contagious. They improved obviously, after treatment with the quadruple therapy, but the effective drug is still unknown. It should be noted that lopinavir/ritonavir tablets have many drug interactions and are the most likely drugs to cause hyperlipidemia and hyperglycemia in these two patients. IFN-α2b is more effective in the early stage of virus infection. Arbidol instruction dose may not be sufficient to inhibit the novel coronavirus in vivo. The evidence-based medicine of Lianhuaqingwen granules for treating various viral infections is just based on Chinese patients.

Socio-technical scenarios and local practice – Assessing the future use of fossil-free alternatives in a regional energy and transport system

This article presents results from a project involving local practitioners in the construction of scenarios for a regional energy and transport system. The purpose is to demonstrate how sustainability transitions research can interact with local practice by means of socio-technical scenarios. Combining quantitative data with qualitative storylines, the article presents four scenarios, which describe different ways of using biogas, biodiesel and electricity in four different applications: city buses, inter-city buses, heavy-duty trucks and industrial processes. The article compares the four scenarios in terms of realization possibilities, energy efficiency and greenhouse gas reduction. Focusing on near-term realization on a commercial basis, the research findings suggest that collaborative scenario construction can be a useful strategy to manage conflicting agendas and engage key stakeholders in dialogues on transition pathways. The article concludes by presenting policy lessons for practice-oriented transition management. The lessons point to the importance of flexibility in system delineations, the critical timing of near-term scenarios, and the use of scenarios to outline local practitioners' agency.

COVID-19 outbreak control, example of ministry of health of Turkey

Our first COVID-19 case in Turkey was a 44-year-old male who referred to the hospital on March 9, 2020. The first related death occurred on March 17, 2020. Preparedness for the pandemic has been ongoing before the first case was detected. The National Pandemic Plan was published in 2006. The Pandemic Influenza National Preparedness Plan was available after being updated in light of experiences gained during the 2009 Influenza A pandemic. Accordingly, Pandemic Coordination Boards and Operation Centers have been established on the national and provincial levels. This was an adaptable plan to the Novel Coronavirus Disease (COVID-19). We formed teams to work on a 24/7 basis and established a Scientific Committee at the Public Health Emergency Operation Center within the General Directorate of Public Health. “COVID-19 Risk Assessment”, “COVID-19 Guideline” and “Case Report Form”, regulations of personal protective equipment along with need-based guidelines, treatment algorithms, brochures and related documents have been released. For the case-based follow-up, Public Health Management System (HSYS) is being used. PCR and rapid diagnostic kits are being used to analyze the samples at the central Microbiology Reference Laboratory and the authorized laboratories in several provinces. Various preventive measures were implemented including flight restrictions to certain countries, gradually expanded to suspending all flights and prohibiting the entry of foreign nationals, 14-day isolation and symptom monitoring for those that came from countries under risk. Persons with chronic diseases have been granted an administrative leave, on campus education at schools and activities of public rest and entertainment areas were temporarily suspended. The measures have been implemented for penitentiary institutions, dormitories, nursing homes, public transport and intercity buses, and also weekend curfews are implemented. In accordance with the pandemic plan, actions have been carried out with a multi-sectoral approach, and preventive measures have been implemented to cover the society as a whole.

Statistical mechanism of passenger mobility behaviors for different transportations

Passengers’ boarding time interval is of great significance for analysis of collective mobility behaviors. In this paper, we empirically investigate the boarding time interval of mobility behaviors based on three large-scale reservation records of passengers traveling by three different types of transportation from a travel agency platform, namely airplane, intercity bus and car rental. The statistical results show that similar properties exist in the passengers’ mobility behaviors, for example, there are similar burstiness [Formula: see text] and memory [Formula: see text] for different time interval distribution, which indicates that the passengers’ mobility behaviors are periodical. Furthermore, we present a probability model to regenerate the empirical results by assuming that the passengers’ next boarding time interval will generate between a short time of 1–7 days with probability [Formula: see text] and a random long time with probability [Formula: see text]. The simulation results show that the presented model can reproduce the burstiness and memory effect of the boarding time interval when [Formula: see text] for three empirical datasets, which suggests the periodical behaviors with the probability [Formula: see text]. This work helps in deeply understanding the regularity of human mobility behaviors.

The Factors Influencing Fatigue Related to the Accident of Intercity Bus Drivers in Indonesia

The Factors Influencing Fatigue Related to the Accident of Intercity Bus Drivers in Indonesia

Assessing Risks of Urban Public Transport Governance

This article explores the torment and risks of urban public transport users at the Bahir Dar intercity bus station. Ethnography research design is applied to collect the data. Accordingly, personal observation, informal discussions, and interviews were important sources of data collection. The findings show that passengers are exposed to risks of robbery and physical and psychological abuses from their departure from home to their final destination. The station is full of lawlessness. Women, children, elderly people, and passengers with luggage are disproportionately vulnerable to such risks. These risks and overall challenges are systemic and structural which are deprived of governance and regulation. Due to absence of care, responsiveness, tangibility, and other important dimensions of customers' satisfaction, customers are poorly satisfied with a transport service delivered in Bahir Dar intercity Bus station.

Public Transit Service Reliability Assessment using Two-Fluid Model

This study introduces a traffic flow theory-based reliability indicator to evaluate the inter-city public transit service. The two-fluid theory parameter n that measures the road networks’ resilience to changing traffic is used as a new reliability indicator of public bus service. We compared the performance of the new indicator with the three existing reliability indicators, including on-time performance, with a total of 52 different GO Bus routes to ascertain the usability of the new indicator. The GO Bus service is an inter-city bus service operated by Metrolinx in the Greater Toronto and Hamilton areas in Ontario, Canada. We used 1 month of GO Bus GPS data collected in July 2017 to estimate various public transit reliability indictors. We also investigated the relationship between reliability indicators and selected roadway network characteristics, such as route length, freeway ratio, intersection density along a route, and so forth. The study applied a series of statistical analyses, including principal component analysis, correlation analysis, and z-test using Fisher’s z transformation. The results showed that the proposed two-fluid indicator n can be used as a supplementary reliability indicator for assessing road networks’ resilience in regards to changing traffic flow conditions. The new indicator provided additional insights for inter-city bus service operators for initiating communication with roadway governing agencies for the purpose of improving road networks to further improve public transit service reliability.

The differences of workload, fatigue, emotional intelligence and driving behavior based on age, experience, time on task per trip among Indonesian inter-city bus drivers

One of the factors affecting road accidents is driving behavior. The driving behavior influences by demographic aspects, fatigue, work condition, and others. To correct a behavior tendency, it is important to enhance the understanding of the influence of the demographic aspect to some factors related to the behavior tendency. This study was intended to measure the effect of age, driving experience, and time on task per trip to the workload (WL), fatigue (F), recovery needs (KP), and emotional intelligent (EI) as factors that influence driving behavior (DD). A set of questions as a research instrument was composed based on various literature. The instrument distributed to inter-city bus drivers from several bus companies. A total of 201 responds to questionnaires were obtained, but only 167 data processed further. The reliability of this instrument is quite good as indicated by the alpha Cronbach of 0.733 and the significant internal consistency result. The Kruskal Wallis test result showed that there were no differences among the above variables based on age groups (<35 y, 35-45 y, and> 45y). However, emotional intelligence differed between driving experience groups (<5 y, 5-10 y,> 10 y) and between time on task per trip (<3 hr, 3-5 hr,> 5 hr). The fatigue level also expressed differently of times on task per trip. Based on the result, it suggested to include emotional intelligence assessment in a corrected tendency behavior. The result also emphasized on time on task as a primary factor in fatigue mitigation to minimize risk accident.

Design of optimum vibration absorbers for a bus vehicle to suppress unwanted vibrations against the harmonic and random road excitations

Unwanted vibrations of the vehicles are regarded as harmful threats to the human health from various biomechanical and psychophysical aspects. Road roughness has been considered as the main cause of unwanted vibrations in bus vehicles. Vertical seat vibrations have been found via simulation of a ten degree of freedom (10-DOF) model of an intercity bus vehicle under harmonic and random excitations caused by road roughness. To suppress undesirable vibrations, mass-spring-damper passive absorbers are proposed in a thirteen degrees of freedom (13-DOFs) model of the bus. By optimizing the characteristics of the embedded passive absorbers under each seat, and implementation of the designed absorbers, it is observed that the vertical displacement amplitudes in the frequency response of the seats are reduced especially near the bus resonance frequencies. In addition, the vertical displacement and acceleration amplitudes are decreased in the random excitation of the road roughness. According to the results, optimized mass-spring-damper absorbers are suggested as a practical solution to suppress the unwanted vibration effects in the bus vehicle.