Search

Signalized intersections that are pretimed are commonly used in rapidly developing cities with diverse traffic patterns, including those found in Indonesia. These intersections are a common source of congestion and delays in road networks, particularly when there is non-lane based (NLB) traffic in urban areas. Accurate estimation of both the base saturation flow rate and capacity is essential for this type of facility, as an error in the prediction of the base saturation flow rate can result in significant bias in capacity evaluation and design at signalized intersections. The estimation of capacity at signalized intersections is critical for ensuring optimal signal timings, minimizing delay, and reducing congestion. Heterogeneous traffic, which refers to the presence of various types of vehicles with distinct static and dynamic characteristics, is a common phenomenon. To address this issue, this paper presents a modeling approach for the SFR that takes into account heterogeneous traffic and NLB movements. Indonesia, being an archipelago with 34 provinces, served as the focus of this study, which specifically concentrated on Banda Aceh, the capital province of Aceh province. Employing primary and observed data collected at a specific, predetermined signalized timing, this study aimed to investigate the impact of intersection geometry and heterogeneous traffic composition on the SFR. By adopting the modeling approach for NLB movements, the study formulated the BSFR model. To estimate the scale parameters of the BSFR, the multiple linear regression approach was utilized. The analysis results reveal that the existing BSFR based on the IHCM formula gives a substantially biased estimation because the PCEs from the Indonesian Highway Capacity Manual (IHCM) are underestimated. This source of error could be partially due to the heterogeneous (varied vehicle composition) traffic flow with NLB movements, unlike that observed under the prevailing conditions of IHCM 1997. The empirical results show that the existing IHCM should be improved to avoid overestimation, particularly for effective approach width (We) greater than 4.5 m. A comparison of the BSFR prediction model between IHCM's PCEs and new PCEs shows that the BSFR is predicted more accurately in the latter case. This finding demonstrates that the existing IHCM can be adjusted in two ways: adjusting PCEs or calibrating the BSFR formula. The proposed models can also enhance the accuracy of BSFR prediction, leading to better signalized intersection capacity estimation, providing support for designing traffic operation, alleviating traffic congestion, and reducing congestion delay within the city. [ABSTRACT FROM AUTHOR]

The tourism and hospitality sectors all over the world have been somewhat decimated by the COVID-19 pandemic. However, there are still many hotels operating today despite the calamity. Given the complexity and unpredictability of the hotel industry environment, this study enhanced the Crafting Strategy (CS) notion by adding the experimenting dimension and provides empirical support for the enhanced CS capability to predict hotel resilience, which are the novelties of this study. This study explained the relationship between CS, planned resilience (PR), reactive resilience (RR), and resilience outcomes (RO). A mixed methods analysis was used to analyze data from 150 hotel senior managers in Bali Island, the hardest hit tourist destination in Indonesia. The result revealed that experimenting is indeed a strong contributor to CS. Furthermore, CS shows a positive and significant impact to PR and RR. PR also has a strong influence on RR and the relationship between PR and RO (recoverability, adaptation, and innovation) is mediated by RR. Positive impacts of recoverability and adaptation on financial performance were also shown. In conclusion, hotels need to build and strengthen both their PR, and RR as they are equally important for the RO that is crucial for sustainability. [ABSTRACT FROM AUTHOR]

The Bus Reform policy known as Trans Koetardja was adopted and implemented in Banda Aceh of Indonesia in early 2018 to promote bus ridership and to specifically mitigate the dependency on private means of transportation. This system is presently being run as a trial and free of service charge through the subsidy provided by the government of Aceh with the amount being spent projected to escalate by the year 2020 due to expansion in the number of bus lines. There is, however, the plan to introduce bus fare to ease the burden of subsidies on the government but most of those engaged in the ridership are generally students and people from low-income households. Therefore, there is the need to determine an appropriate charge or tariff based on the household's ability to pay (ATP), especially with the focus on the need for low-income people to sustain the subsidy for their daily travel. This study was conducted to determine the ability to pay (ATP) for bus users through the use of travel cost budget (TCB) which is defined as the maximum money allocated by a household for transportation within a month as a constraint. The TCB was classified based on income classes into low-income and medium-high income to ensure simplicity. The research was conducted in 2019 by collecting 450 samples from three Trans Koetardja lines using reveal preference (RP) survey after which Ordinary Least Square (OLS) method was adopted to identify the factors significantly contributing to TCB based on the income classes. Moreover, the ATP for each income class was also determined using the household budget method. The empirical results from the OLS showed the TCB usually allocated by medium-high income households is slightly different from those with low-income as observed with 0.306 million IDR/month (20.85 USD/month) and 0.208 million IDR/month (14.17 USD/Month) while the predicted ATP was 7,397 IDR/trip (0.5 USD/trips) and 2,259 IDR/trip (0.15 USD/trips), respectively. It is, however, important to note that 1 USD = 14,677.73 IDR. Furthermore, the factors observed to be influencing the variation in TCB include age, monthly income, gender, and the number of private cars or motorcycles owned within the household. [ABSTRACT FROM AUTHOR]

On-street parking leads to reduce road capacity and decrease traffic performance of the certain roads. Peunayong, one of busiest area of Central Business District of Banda Aceh City, Indonesia, is facing traffic congestion in certain hours due to parking lot along the roads. This study was conducted to evaluate the feasibility of on-street parking based on road performance. The study was conducted in Peunayong, Banda Aceh, Indonesia. The Indonesian Highway Capacity Manual mention that one of the performance parameter values of traffic condition is Degree of Saturation. The data needed for calculation of Degree of Saturation are the geometric conditions, traffic volume and the side frictions. The results show that on-street parking facilities on segment 2 of Khairil Anwar Street should be evaluated, as the Degree Saturation value is greater than 0.75 (unstable road condition), by changing parking patterns into a parallel configuration or eliminating parking facilities. Furthermore, the parking configuration of R.A. Kartini Street also needs to be rearranged. Despite the stable road performance, this road is uncomfortable to pass because there is only one lane remaining due to unfeasible parking patterns and existence of street market along the segment. The road performance of Khairil Anwar Street (segment 1), Ahmad Yani Street, W.R Supratman Street, T.P. Polem Street, Twk. Daudsyah Street and Ratu Safiatuddin Street is in stable condition, with DS < 0.75. This indicating that on-street parking facilities can be maintained. While as for the W.R. Supratman Street should be evaluated in year of 2017 to avoid traffic jam along this corridor. [ABSTRACT FROM AUTHOR]

Pretimed signalized intersection is known as a common source of congestion, especially in urban heterogeneous traffic. Furthermore, the accuracy of saturation flow rate is found to cause efficient and vital capacity estimation, in order to ensure optimal design and operation of the signal timings. Presently, the traffic also consists of diverse vehicle presence, each with its own static and dynamic characteristics. The passenger car equivalent (PCE) in an essential unit is also used to measure heterogenous traffic into the PCU (Passenger Car Unit). Based on the collection of observed data at three targets in Banda Aceh City, this study aims to redetermine the PCEs by using Bayesian linear regression, through the Random-walk Metropolis-Hastings and Gibbs sampling. The result showed that the obtained PCE values were 0.24, 1.0, and 0.80 for motorcycle (MC), passenger car (PC), and motorized rickshaw (MR), respectively. It also showed that a significant deviation was found between new and IHCM PCEs, as the source of error was partially due to the vehicle compositions. The present traffic characteristics were also substantially different from the prevailing conditions of IHCM 1997. Therefore, the proposed PCEs enhanced the accuracy of base saturation flow prediction, provided support for traffic operation design, alleviated congestion, and reduced delay within the city, which in turn improved the estimation of signalized intersection capacity., Competing Interests: The authors have declared that no competing interests exist.