EMPIRICAL REVIEW ON THE REGULATIONS, INTEGRATIONS OF WORKS AND LOCAL AUTHORIZATION AND THE ATTRIBUTES OF CRITICAL SUCCESS FACTORS AND CONSTRUCTIONS DELAY OF THE ROAD PROJECTS IN OMAN

The prime aims of the study to investigates of empirical articles and reviewed on the moderating effects of the regulations, integrations of works and local authorization on the attributes of critical success factors and constructions delay of the road projects in Oman. The study used the empirical literature from the all relevant online sources and data `231 based as many as possible. The findings short listed the consultant related factors, the contractor related factors, designed related factors, client related factors, labor related factors, material related issues, equipment related issues respectively. Moreover, study also summarized that there are moderating effects of the regulations, integrations of works and local authorization on the attributes of critical success factors and constructions delay of the road projects in Oman. The present study recommends doing a conclusive investigation on the above literature gap by real data and justifying above review relationship of moderating effects of the regulations, integrations of works and local authorization on the attributes of critical success factors and constructions delay of the road projects in Oman.


INTRODUCTION
site management and supervision (RII: 0.667) are essential mitigation methods of construction delay in Oman megaprojects. The study recommends three-part novel solutions to mitigate delay in the Oman construction industry (Oyegoke & Al Kiyumi, 2017). Moreover, Alzebdeh, K., et al. in 2015 examines interpretive structural modelling (ISM) as a viable technique for modelling complex interactions among factors responsible for cost overruns in construction projects in the Sultanate of Oman. There are four factors were found to be at the root of cost overruns: instability of the US dollar, changes in governmental regulations, faulty cost estimation, and poor coordination among projects' parties. Taking appropriate actions to minimize the influence of these factors can ultimately lead to better control of future project costs. Thisstudy is of value to managers and decision makers because it provides a powerful yet very easy to apply approach for investigating the problem of cost overruns and other similar issues (Alzebdeh, Bashir, & Al Siyabi, 2015).
However, lack of professionalism, fairness in financial transactions, incompetent supervisors, lack of materials and incomplete drawing have been found as the top five factors in productivity. management, people, cooperation, health and safety, logistics, involvement, operational activity, authority, quality and financial conditions (Bierman, O'donnell, Burke, McCormick, & Lindsay, 2014). In the same way, other studies examined the causes of delay in construction projects in oil and gas processing facilities in Oman and serves as a case study for the Gulf Cooperation Council (GCC) countries. The survey results showed a high degree of agreement among the perceptions of project stakeholders, clients, contractors, and consultants on the causes of project delay, and there is no evidence to suggest that the causes of project delay differ significantly according to organization size or organizational ownership. Moreover, seven factors were identified as the major causes of project delay (Ruqaishi & Bashir, 2013) (Alnuaimi, Taha, Al Mohsin, & Al-Harthi, 2009).

METHODOLOGY OF THE STUDY
As study aims to investigate existing available literature for determining of relevant factors that have cause and effects on the delay of road construction industry in Oman. Therefore, the study uses available sources of existing literature based on the four main keywords 'critical success factors and road construction delay in Oman', departmental integrations of works on the attributes of critical success factors and constructions delay of the road projects in Oman 'effects of the local authorization on the attributes of critical success factors and constructions delay of the road projects in Oman ' to ensure relevant critical success factors especially the contactor, owner, consulted, designed, client, manpower and resources, material and suppliers and equipment related attributes caused delay of constructions of road in Oman.

EMPIRICAL REVIEW FINDINGS
The present study summarized and short listed of the factors in the two categories such as internal and external factors have caused to be influenced to delay of road constructions in the Arab regions especially in Oman. Hamontree, C., et al. in 2018 exploed the list of road construction delay causes gathered from literature having different countries. The study indicates that the 5 top factors affecting road construction delays are: incomplete drawings, lack of equipment efficiency or financial status of contractors, delay in relocating existing infrastructure structures, less of project engineer experiences, and delay in relieving environmental impact, respectively (Hamontree, Thapanont, Santi, & Pruethipong, 2018). Mahamid, I. in 2017 identified factors were ranked according to their levels of severity, frequency, and importance. Results indicated that the top five important factors affecting schedule delay in road construction projects are: improper planning, poor labor productivity, additional works, rework, and lack of contractor experience. The study concluded that the main effects of schedule delay in road construction projects as assessed by contractors are: cost overrun, disputes, arbitration, litigation, and poor quality (Mahamid, 2017). Oyegoke, A. S. and N. Al Kiyumi in 2017 identified the five most frequent causes of delay in the Sultanate of Oman, in rank order, are: selection of the lowest bid, instead of best bid for the client (RII: 0.698); the financial condition of the main contractor (RII: 0.664); delay in decision-making by the client (RII: 0.656); and poor construction planning by the main contractor (RII: 0.649). Also, the findings indicate that extra cost (RII: 0.754) and project time overrun (RII: 0.724) are the most significant effects of the delay in the Oman megaprojects. The use of experienced contractors and consultant (RII 0.675), efficient construction planning by the main contractor and effective site management and supervision (RII: 0.667) are essential mitigation methods of construction delay in Oman megaprojects. The study recommends three-part novel solutions to mitigate delay in the Oman construction industry (Oyegoke & Al Kiyumi, 2017).

Contactor Related Attributes on the Delay of the Road Construction
Santoso, D. S. and S. Soeng in 2016 analyzed factors on the list were land acquisition, award of project to lowest bidder, equipment breakdowns, poor site arrangement, management and supervision, unexpected ground condition and terrain, low quality of the contractor human resources, late progress payments, and low productivity of labor. Recommendations to manage the delay factors were presented. Significant relationships between the delay factors and the three project objectives also were observed and discussed (Santoso & Soeng, 2016). Shah, R. K. in 2016 investigated the causes of delays and cost overruns in construction projects in Australia, Malaysia and Ghana. However, there are reasons for delays for road construction projects, especially wrong planning of contractors, poor construction site, insufficient experience with contractors are the most influential factors in Malaysia (Shah, 2016). Bagaya, O. and J. Song in 2016 identified the most frequent, severe, and important causes of schedule delays affecting financial capability of the contractor, financial difficulties of the owner, equipment availability of the contractor, slow payments for completed work, and poor subcontractor performance by the contractor. A comparison of the causes of schedule delays in 11 countries to validate the results of the study showed that financial capability of the contractor was not only the most encountered factor in delays for Burkina Faso's construction industry, but also appeared in many other Asian and African countries (Bagaya & Song, 2016). Bekr, G. A. in 2015 summarized The 65 causes compiled through the literature review and the pilot study were classified into four groups (client related, contractor related, consultant related and external factors) (Bekr, 2015). Moreover, there several studies have the semilar result and support with above review findings accordingly (Rahman, Lee, & Ha, 2014), (Mahamid, 2013), (Rafieizonooz, 2012), (Albogamy, Scott, & Dawood, 2012). (Pourrostam & Ismail, 2012), (Pathiranage, 2011), (Enshassi, Al-Najjar, & Kumaraswamy, 2009) (Toor & Ogunlana, 2008). (Assaf & Al-Hejji, 2006).

Owner Related Attributes on the Delay of the Road Construction
Guida, P. L. and G. Sacco in 2019 analyzed of schedule delays is a traditional problem in almost any project of some dimension and complexity. Assessing schedule delays and allocating them to responsible parties and activities is a sensitive problem in project management. In client-supplier, i.e. owner-contractor relations, the schedule delays represent a very important issue, often escalating into claims and undermining the commercial outcome of the whole project, involving lengthy negotiations and juridical cases, tracing to responsibilities and financial compensations. (Guida & Sacco, 2019). Hamontree, C., et al. in 2018 exploed that the delay in construction project is an important issue in construction management. This is because delay will cause negative impacts on both the owner and the contractor. For owner, it will lead to the late opening of new road. For contractor, it will cause extra operating cost. In this paper, therefore, the causes of delay in road construction projects are researched (Hamontree et al., 2018). Another study done by Islam, M. S. and B. Trigunarsyah in 2017 explored factors, delay in progress payment by owner, contractors' cash flow problem, improper planning and scheduling, poor site management, and change order by (Muhammad Saiful Islam & Trigunarsyah, 2017). (Mohammad Saiful Islam, Trigunarsyah, Hassanain, & Assaf, 2015), (Bekr, 2015), (Mohammad Saiful Islam et al., 2015), (Bierman et al., 2014), (Cristóba, 2014), (Alnuaimi & Mohsin, 2013), (Albogamy et al., 2012), (Enshassi et al., 2009), (Al-Najjar, 2008, (Assaf & Al-Hejji, 2006). However, Bagaya, O. and J. Song in 2016 identified the most top five most important delay factors were ranked as follows: financial capability of the contractor, financial difficulties of the owner, equipment availability of the contractor, slow payments for completed work, and poor subcontractor performance by the contractor (Bagaya & Song, 2016). Moverover, Elawi, G. S. A., et al. in 2016 identifies 10 risk factors were identified and were grouped into four categories. Average delay in infrastructure projects in Mecca was found to be 39%. The most severe cause of delay was found to be the land acquisition factor. This highlights the critical land ownership and acquisition issues that are prevailing in the city. It is concluded that the majority of project delays were caused from the owner's side as compared to contractors, consultants, and other project's stakeholders (Elawi et al., 2016). Moreover, there several studies have the semilar result and support with above review findings accordingly (Mohammad Saiful Islam et al., 2015), (Bekr, 2015), (Mohammad Saiful Islam et al., 2015), (Bierman et al., 2014), (Cristóba, 2014), (Alnuaimi & Mohsin, 2013), (Albogamy et al., 2012), (Enshassi et al., 2009), (Al-Najjar, 2008, (Assaf & Al-Hejji, 2006). Alamri, N., et al. in 2017 investigate four main categories: Client, Contractor, Consultant and External Factors. The collected data was then analysed statistically and ranked according to its significance (Alamri et al., 2017). Moreover, Atout, M. M. in 2016 summarized literature about the Construction projects in Gulf rejoin presents particular conditions in which the consultant of the project has to concentrate during each phase of design to ensure that it will be accomplished on time, for example, the unrealistic of project duration, foreign designers and consultants, unusual growth of construction industry, the exceptional features of architectural details in the design of projects, and international consultant establishments, firms and office. Based on above literature this paper investigates the main causes of the delays contributed by the projects designers and consultants by representing their roles and responsibilities to hand over the projects on time. The outcome and the results of the study is prepared based on the designed questionnaires and interviews conducted with many consultants and designers intended to identify the causes of delays projects in Gulf region from the viewpoint of the designers. In addition, the required preventive actions of the designers are studied to avoid any impacts on the progress of the project. The study investigates other factors from the client side, contractor side and the appointed project manager might affect the consultant performance on the project (Atout, 2016). Aziz, R. F. and A. A. Abdel-Hakam in 2016 Analyzed represents consultants, contractors and site as well as design engineers with the exclusion of the owner who represents the government in road projects as a party. Revealed the results of serious relationship between campaigns and groups between contractors and site / design engineers and between consultants and site design engineers and a fairly low correlation between contractors and advisors (Aziz & Abdel-Hakam, 2016). Bagaya, O. and J. Song in 2016 identified the most frequent, severe, and important causes of schedule delays affecting public constructions projects in Burkina Faso to enhance the managerial capability of project managers. This research was conducted by questionnaire survey to solicit the causes of schedule delays from 140 Burkinabé experts (clients, contractors, and consultants) (Bagaya & Song, 2016). Elawi, G. S. A., et al. in 2016 identifies majority of project delays were caused from the owner's side as compared to contractors, consultants, and other project's stakeholders. This finding matched with the research findings of the Gulf Countries Construction (GCC) Industry's literature. This study fills an important practice and research gap for improving the efficiency in delivering infrastructure projects in the holy city of Mecca and Gulf countries at large (Elawi et al., 2016). Another study done by Mahamid, I. in 2016 also conducted to investigate the performance in construction projects in Saudi Arabia in order to identify the contributors to poor performance and their severity according to public owners, contractors and consultants through a questionnaire survey. Inputs of consultant's underline that the top three affecting factors are: poor planning and scheduling, poor site management and payments delay respectively. Key project participants and researchers, could benefit from the findings and recommendations of this study. Although this study is related to views for respondents from Saudi Arabia, other developing countries could benefit from its results (Mahamid, 2016). Moreover, there several studies have the semilar result and support with above review findings accordingly (R. Hasan et al., 2014;U. Hasan, Whyte, & Al Jassmi, 2019), (Emam et al., 2015), (Bekr, 2015), (Mohammad Saiful Islam et al., 2015). (Jarkas & Younes, 2014), (Bierman et al., 2014), (Kamanga & Steyn, 2013), (Albogamy et al., 2012). , (Assaf & Al-Hejji, 2006), (Faridi & El-Sayegh, 2006).

Designed related Attributes on the Delay of the Road Construction
Atout, M. M. in 2016 summarized literature about the Construction projects in Gulf rejoin presents particular conditions in which the consultant of the project has to concentrate during each phase of design to ensure that it will be accomplished on time, for example, the unrealistic of project duration, foreign designers and consultants, unusual growth of construction industry, the exceptional features of architectural details in the design of projects, and international consultant establishments, firms and office. Based on above literature this paper investigates the main causes of the delays contributed by the projects designers and consultants by representing their roles and responsibilities to hand over the projects on time. The outcome and the results of the study is prepared based on the designed questionnaires and interviews conducted with many consultants and designers intended to identify the causes of delays projects in Gulf region from the viewpoint of the designers (Atout, 2016). Bekr, G. A. in 2015 concluded that the most effective delay factors affecting the time overrun in the public projects in Iraq are: security measures, government change of regulations and bureaucracy, official and non-official holidays, low performance of lowest bidder contractors in the government tendering system, design and changes by owner, design changes by consultants, delay in progress payments by the owner, problems with local community, owner's lack of experience in construction and economic local and global conditions (Bekr, 2015). Emam, H., et al. in 2015 identified major changes in design during construction; ineffective planning and scheduling; ineffective control of progress, and; https://www.cribfb.com/journal/index.php/ijfb Indian Journal of Finance and Banking Vol. 4, No. 4; 55 changes in the scope of projects. Construction projects need to adopt planning and scheduling methods that deal with its dynamic and changing nature to create robust programmes with buffers to deal with uncertaintie (Emam et al., 2015). Moreover, there several studies have the semilar result and support with above review findings accordingly (Bekr, 2015), (Pourrostam & Ismail, 2012) (Alnuaimi et al., 2009) and (Toor & Ogunlana, 2008).  (Oyegoke & Al Kiyumi, 2017). Moreover, there several studies have the semilar result and support with above review findings accordingly (Mukuka, Aigbavboa, & Thwala, 2015), (Bekr, 2015), (Atibu Seboru, 2015), (Głuszak & Leśniak, 2015), (Motaleb & Kishk, 2013), (Ruqaishi & Bashir, 2013), (Niazai & Gidado, 2012), (Albogamy et al., 2012), (Pourrostam & Ismail, 2012), (Rafieizonooz, 2012), ( Kaliba, Maya, & Mumba, 2009) and (Alnuaimi et al., 2009). Durdyev, S., et al. in 2018 analyses the barriers to the adoption of the triple-bottom line of sustainability of the construction sector within the developing country of Malaysia. Findings of this paper uncover the most significant factors constraining the SC in Malaysia related to government, cost, knowledge and information, workforce, and client and market. The findings revealed that clear and effective legislative process is crucial for the enforcement of the integration of SC materials and practices as well as economics incentives which will ultimately lead to effective implementation of SC initiatives; hence, sustainable economic growth and efficient resource (energy, water and material) utilization. It is hoped that the findings provide guidelines for the government authorities so that they invest their efforts and allocate resources in more efficient way (Durdyev et al., 2018). Moreover, Ghisellini, P., et al. in 2018 explored the construction sector is one of the most impacting economic activities in the world. The results show that CP for C&DWM has not been yet fully implemented in construction companies and industry mainly due to legislative and economic barriers. Construction companies are also much resistant to eco-innovation due to the fact they are only profit driven and lack of awareness of environmental protection through C&DWM, as well as lack of culture towards sustainable development. A refining of the current C&DWM regulations, laws and policies as well as the support of the demand of sustainable buildings are suggested as urgent measures to improve the C&DWM by the construction companies and to put the goals of CP, CE and SC at the forefront of their business agenda (Ghisellini, Ji, Liu, & Ulgiati, 2018).In the same way, Kong, L., et al. in 2018 studies identified issues on the supply chain management of precast construction while considering time-dependent transportation time and on-site assembly time. There are two main contributions of our work. The results also show that the objective of achieving additional environmental performance conflicts with that of obtaining economic performance. However, sensitivity analysis further shows it is not always true to consider only additional environmental performance for the suppliers to achieve 'green' value. For a sustainable business, the customer's service-JIT delivery should also be considered. The research contributes to batch delivery theory by expanding the approach to a time-dependent delivery model by considering both the economic and environmental effects (Kong, Li, Luo, Ding, & Zhang, 2018). However, Mahamid, I. in 2017 addressed schedule delay in road construction projects in Saudi Arabia. Results indicated that the top five important factors affecting schedule delay in road construction projects are: improper planning, poor labor productivity, additional works, rework, and lack of contractor experience. The study concluded that the main effects of schedule delay in road construction projects as assessed by contractors are: cost overrun, disputes, arbitration, litigation, and poor quality (Mahamid, 2017). Moreover, there several studies have the semilar result and support with above review findings accordingly (Mohammad Saiful Islam et al., 2015), (Shah, 2014).

Material and Suppliers related Attributes on the Delay of the Road Construction
Ghisellini, P., et al. in 2018 explored the construction sector and recommend to improve its environmental performances the sector is innovating in terms of cleaner materials, products and processes (Ghisellini, Ripa, & Ulgiati, 2018). Chen, F., et al. in 2018 investigate the structural implications and recommended that more focus should be placed on the possible measures, such as new structures and materials, to improve the structural integrity and thus the overall pavement performance of the integrated system (Chen, Coronado, Balieu, & Kringos, 2018). However, Durdyev, S., et al. in 2018 analyses the barriers to the adoption of the triple-bottom line of sustainability of the construction sector within the developing country of Malaysia. The findings revealed that clear and effective legislative process is crucial for the enforcement of the integration of SC materials and practices as well as economics incentives which will ultimately lead to effective implementation of SC initiatives; hence, sustainable economic growth and efficient resource (energy, water and material) utilization. It is hoped that the findings provide guidelines for the government authorities so that they invest their efforts and allocate resources in more efficient way (Durdyev et al., 2018). Jiang, W., et al. in 2018 has done an extensive study on traditional and novel engineering materials and the increasing demands by growing traffic have led to tremendous changes of the function of roads. This study focused on state-ofthe-art research on the performance, applications and challenges of six environment-friendly functional road materials, namely the permeable asphalt concrete, noise-reducing pavement materials, low heat-absorbing pavement materials, exhaust gas-decomposing pavement materials, de-icing pavement materials, and energy harvesting pavement materials (Jiang, Huang, & Sha, 2018). Kong, L., et al. in 2018 studies identified issues on the supply chain management of precast construction while considering time-dependent transportation time and on-site assembly time. The optimal results show that, compared with the supplier's intuitive minimax optimization with deliveries on the earliest due date, there is an average 10.7% reduction of the objective value of a one-day assembly task by our proposed method. The results also show that the objective of achieving additional environmental performance conflicts with that of obtaining economic performance (Kong et al., 2018). However, Tarimo, M., et al. in 2017 examined construction and maintenance for the sustainable roads in Serengeti National Park. However, road construction in protected areas should be sustainable in terms of availability of quality materials within economic haulage distance and the entire construction, operation and maintenance process should have less environmental impacts like habitat fragmentation and dust pollution. The data collected were from soil material test in the existing borrow pits, traffic volume counting, document study and interview with fifty (50) road stakeholder. Results show that the current poor performance of the studied road sections may be due to lack of financial and human resources, quality gravel materials and existing traffic volume (Tarimo, Wondimu, Odeck, Lohne, & Laedre, 2017). Moreover, Gebrehiwet, T. and H. Luo in 2017 investigates the typical causes of delay at different stages of construction and its effect in the Ethiopian construction projects. They found that the influential causes of delay investigated are corruption, unavailability of utilities at site, inflation/price increases in materials, lack of quality materials, late design and design documents, slow delivery of materials, late in approving and receiving of complete project work, poor site management and performance, late release budget/funds, and ineffective project planning and scheduling successively as unique to the Ethiopian construction project (Gebrehiwet & Luo, 2017).
Mahamid, I. in 2016 also conducted to investigate the performance in construction projects in Saudi Arabia . Moreover, results indicate that owners rank poor communication among project participants as the top severe factor affecting the performance in construction projects, followed by poor labor productivity and poor planning and scheduling, respectively. Inputs of contractors indicate that the most severe factor is payments delay, followed by escalation of material prices and poor labor productivity, respectively (Mahamid, 2016). Moreover, there several studies have the semilar result and support with above review findings accordingly (Mukilan & Jayanthi, 2015), (Jarkas & Younes, 2014), (Bierman et al., 2014), (Owolabi James, Amusan Lekan, Oloke, Olusanya, & Tunji-Olayeni, 2014), (Rahman et al., 2014), (Kamanga & Steyn, 2013), (Haseeb, Bibi, & Rabbani, 2011), (Pathiranage, 2011), (Jurf & Beheiry, 2010), (Enshassi et al., 2009) (Kaliba, Muya, & Mumba, 2009), (Al-Najjar, 2008. Hamontree, C., et al. in 2018 exploed that the delay in construction project The study indicates that the 5 top factors affecting road construction delays are: incomplete drawings, lack of equipment efficiency or financial status of contractors, delay in relocating existing infrastructure structures, less of project engineer experiences, and delay in relieving environmental impact, respectively (Hamontree et al., 2018). Moreover, Bagaya, O. and J. Song in 2016 identified the top five most important delay factors were ranked as follows: financial capability of the contractor, financial difficulties of the owner, equipment availability of the contractor, slow payments for completed work, and poor subcontractor performance by the contractor. A comparison of the causes of schedule delays in 11 countries to validate the results of the study showed that financial capability of the contractor was not only the most encountered factor in delays for Burkina Faso's construction industry, but also appeared in many other Asian and African countries (Bagaya & Song, 2016). However, Santoso, D. S. and S. Soeng in 2016 analyzed and summarized influencing factors on the list were land acquisition, award of project to lowest bidder, equipment breakdowns, poor site arrangement, management and supervision, unexpected ground condition and terrain, low quality of the contractor human resources, late progress payments, and low productivity of labor. Recommendations to manage the delay factors were presented. Significant relationships between the delay factors and the three project objectives also were observed and discussed (Santoso & Soeng, 2016). Moreover, there several studies have the semilar result and support with above review findings accordingly (Shah, 2014)(Owolabi James et al., 2014 (Kamanga & Steyn, 2013) (Mahamid, 2013) (Haseeb et al., 2011)(Kaliba et al., 2009)(Al-Najjar, 2008.

Govt. regulations and laws, departmental integrations local authorization on the attributes and the Road Construction delay
Ahmadabadi, A. A. and G. Heravi in 2019 evaluate the effects of CSFs on the success of PPP projects using PLS-SEM. The results confirmed the effect of CSF on project success and showed that private sector capability has a direct effect on project success during the construction period and government capability is very effective during the project operation stage. In addition, investigating the case studies with respect to the introduced model indicated that a transparent bidding process, risk allocation, and good partnering are among the CSFs in PPP projects in developing countries (Ahmadabadi & Heravi, 2019). However, Mahdi, I. and E. Soliman in 2018 found about the significant and top ranked delay factors in Arabic Gulf countries. Because of most construction projects are challenged with delays which have substantially negative impacts to any country. The analysis carried out showed that fourteen delay causes are common in the gulf area. The majority of delay factors include shortages of resources, inefficiency of management teams and governmental regulation. Analysis showed that significant correlation exists between delay causes rankings in Qatar, Kuwait and KSA, while Oman is differing. This study is a contribution to the efforts required to mitigate construction industry delays in the Arabic gulf countries and other countries with similar conditions (Mahdi & Soliman, 2018).However, Alamri, N., et al. in 2017 investigate and analyze the causes of delays in Dam projects in Oman. An intensive literature review was carried out to identify the causes of delays in Dam and infrastructure projects. The results reveal, based on Pareto's law of 80/20, that the top causes behind the delays of Dam construction projects in Oman are: severe weather conditions, change orders, uncertainty in ground condition, poor site management, executive bureaucracy in client organization, feasibility study did not cover all aspects, mistakes in soil investigation, natural effects during construction work, difficulty of defining project requirement, slowness of decision making process, delay of obtaining approval from the different government authorities, and land acquisition (Alamri et al., 2017). Moreover, there several studies have the semilar result and support with above review findings accordingly (Atibu Seboru, 2015), (Alzebdeh et al., 2015), (Bekr, 2015) and (Kaliba et al., 2009). constructions of road in Oman. Furthermore, study also will fill-up literature gap by applying of government regulations, departmental integrations of works and local authorization weather there is moderating effects of the on the attributes of critical success factors and constructions delay of the road projects in Oman. The present study recommends doing a conclusive investigation on the above literature gap by real data and justifying above review relationship of moderating effects of the regulations, integrations of works and local authorization on the attributes of critical success factors and constructions delay of the road projects in Oman.