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Green highway is a highway project that has been designed and constructed with the sustainability requirements and global standard. Basically, green highway is one of the major parts for sustainable concept where three major aspects are addressed which are economic, social and environment. The main focus for economic aspect is to increase profitability by making more efficient use of resources especially material, improve the quality of life by fulfilling the nation’s need for social aspect while protecting the environment from the impact of CO2 emission and using of natural resources efficiently for the purpose of environment aspect. Therefore, it is important for highway stakeholders to incorporate sustainable criteria in their projects. The implementation of sustainable concept in highway needs to be evaluated by green highway rating tool assessment. Thus, the purpose of this study is to establish a tool to assess and certify a green highway in Malaysia. The data for this study was obtained through group discussion with highway experts and questionnaires that were distributed to identify the sustainability factors. Then the data were analyzed using factor analysis method. The findings of this study indicated that, there are five major sustainable factor which are Sustainable Design and Construction Activities, Social and Safety, Energy Efficiency, Environmental and Water Management and Material and Technology that are included in the development of green highway rating system.

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The construction industry environment nowadays is becoming more complex with more issues to be resolved with the agreeable approaches amongst the team. Nevertheless, the Building Information Modelling (BIM) innovation is acknowledged to disentangle those prevalent issues towards delivering a better project performance. With the emergence of BIM technology, various concerns such as constant errors and reworks, team-miscommunication, construction waste, energy inefficiencies, and many more in the industry practices, could be refined. Specifically, BIM capabilities mainly facilitate the design and construction operations. Albeit the processes involved demand an early planning and profound decision-making, the BIM mechanism helps the project team to execute the proposed construction projects effectively. With regards to maintaining the sustainability in the industry, “Green BIM” term is introduced to describe the manipulation of BIM technology to be incorporated along with the sustainable design and construction techniques. Therefore, this paper reviews the potentials of “Green BIM” in improving the traditional practices of project stakeholders throughout the project life cycle, particularly focusing on the design and construction phases. It discusses the previous studies on “Green BIM”, “Green BIM” concepts, and “Green BIM” approaches concerning its benefits and challenges in enhancing the construction industry practices. Significantly, through the appropriate “Green BIM” resolution, the procedures initiated with the green settings and completed with the green requirements, could empower more sustainable construction industry

Abstract. This paper presents the usage of Structural Equation Modelling (SEM) approach in analysing the effects of Building Information Modelling (BIM) technology adoption in improving the reliability of cost estimates. Based on the questionnaire survey results, SEM analysis using SPSS-AMOS application examined the relationships between BIM-improved information and cost estimates reliability factors, leading to BIM technology adoption. Six hypotheses were established prior to SEM analysis employing two types of SEM models, namely the Confirmatory Factor Analysis (CFA) model and full structural model. The SEM models were then validated through the assessment on their uni-dimensionality, validity, reliability, and fitness index, in line with the hypotheses tested. The final SEM model fit measures are: P-value=0.000, RMSEA=0.079<0.08, GFI=0.824, CFI=0.962>0.90, TLI=0.956>0.90, NFI=0.935>0.90 and ChiSq/df=2.259; indicating that the overall index values achieved the required level of model fitness. The model supports all the hypotheses evaluated, confirming that all relationship exists amongst the constructs are positive and significant. Ultimately, the analysis verified that most of the respondents foresee better understanding of project input information through BIM visualization, its reliable database and coordinated data, in developing more reliable cost estimates. They also perceive to accelerate their cost estimating task through BIM adoption.

This paper presents the Structural Equation Modelling (SEM) analysis to evaluate the mediating effects of cost estimates reliability towards the Building Information Modelling (BIM) technology adoption. Using results from a survey by questionnaire, SEM analysis employing SPSS-AMOS application is to assess the relationships amongst the studied constructs (Improved Information, Perceived Benefits, BIM Adoption and Cost Estimates Reliability) by testing three hypotheses. The SEM model was established with its validation through the assessment on its uni-dimensionality, validity, reliability, and fitness index, prior to the hypotheses testing. There are two effects possibly involved in the constructs’ relationships, namely direct and indirect effects, in which were examined using Sobel Mediation Test. The results showed that from all mediating relationships developed amongst the constructs, only Cost Estimates Reliability construct demonstrates its role as partial mediator in the direct relationship between Improved Information and BIM adoption constructs. Whilst the other two hypotheses failed the test, indicating no mediation is possible in between the related constructs relationships. The analysis confirmed that the BIM capabilities could provide better mechanism in understanding project information to establish more reliable cost estimates. It could then improve the estimators’ skills and knowledge throughout the whole cost estimating process, hence potentially motivating them towards adopting the BIM technology.

Sustainable development principles have been implemented in various sectors including construction. Proper development and operation of infrastructure projects such highways can contribute significantly to the mission of sustainable development. Previous studies shown that most of conventional highways are unsustainable in many ways. Highways are facing severe challenge such as deteriorating condition, congestion, energy supply, and shortfall of funding for maintenance and capacity expansion to meet increasing demand. However at the same time, they consume huge amount of natural minerals and energy and generate waste and emission which contributing to climate changes and global warming. Therefore, sustainable design, construction, operation and maintenance have become priority these day. The aim of this paper is to determine critical elements for sustainable design and construction based on ranking of the priority level of the weighted value of each criteria. The questionnaires survey were developed and distributed to related respondents in order to obtain the agreement level for the element. The data was analysed using SPSS with factor analysis method.  Result from the analysis shown the criteria, weightage and score for main criteria for sustainable design and construction activities for green highway.

: In today's world, Information and Communication Technology (ICT) adoption is one of the most critical factors influencing project stakeholders' ability to effectively coordinate and collaborate construction activities. The construction industry and its stakeholders are often confronted with a large volume of data and serious communication. Unlike other sectors, the building industry's use of ICT has not been extensively studied. Consequently, it adds to a range of obstacles to completely using ICT. As a result, the study aimed to investigate the barriers of ICT in managing construction project. The objectives for this study were to identify the current state of ICT use in the construction industry and to investigate the barriers to ICT use in construction project management. The data for this analysis was gathered using both secondary and primary data collection methods. Secondary data was gathered using a literature review of previous studies and documents on ICT for construction project management. The study used a quantitative research design that included a questionnaire survey. To explain the respondents, a non-probability sampling approach was used. A total of 40 people responded to the questionnaire survey, which included members of different project teams. Statistical Program for Social Sciences applications was used to complete the data analysis (IBM SPSS). The results were produced using critical and descriptive analysis. Computers and email were found to be among the most widely used ICT methods for managing construction projects, according to the findings. One barrier to ICT implementation in construction project management was resistance to reform and the high cost of ICT adoption. Resistance to change and the high cost of ICT adoption were among the challenges to ICT implementation in construction project management.