Kalibanteng Intersection is one of primary node in west part of Semarang City. It is a signalized intersection which shaped roundabout. It lies on the truck track from west to east of Java Island, which is crossed over by Flyover Yos Sudarso -Siliwangi and Flyover Sudirman -Siliwangi. Formerly

To date, the traffic accident number on hairpin curve is still quite high. This is exacerbated by Radius + 42.889, No. of accident = -0.785 Radius + 0.008 Speed -284.301, and EAN = 0.028 Speed -1108.689.

Since 2011, Government of Semarang City has planned the construction of a rail-based Mass Public Transportation System. This discourse is getting closer to realization in mid-2018, where the Semarang government sets Light Rail Transit (LRT) as the rail-based Mass Public Transportation System that will be implemented in 2019. Various opinions of the pros and cons rise due to the realization of this issue, in the midst of the slight number of public transport users in Semarang. This paper is a preliminary study that reviews the preferences of Semarang residents using Bus rapid Transit (BRT) to the LRT, with respondents coming from existing public transport users, such as Trans Semarang. Trans Semarang is the name of Bus Rapid Transit system in Semarang. The stated preference model between LRT with existing public transport vehicles used binomial logit analysis by considering the effect of changes in travel time and tariff. Based on the analysis of the preferences of Trans Semarang users on LRT, there are four conditions, namely: (1) When the LRT has the same travel time as Trans Semarang, the probability of LRT selection is 38.2%.(2) When the LRT is 60 minutes faster than Trans Semarang, the probability of choosing the LRT increase to 43.5 percent. (3) When the LRT tariff is the same as Trans Semarang, the probability of the LRT election is 39%. (4) When the LRT travel fare is Rp.10,000.00 higher than Trans Semarang, the probability of the LRT election decreases to 25.6%.

Monitoring the structural condition of the pavement is a very important process to be carried out periodically because it can estimate the damage that occurs as early as possible. However, this process is still constrained due to the limited non-destructive pavement response measuring instrument available and the lack of expertise in analyzing the structural condition of the road from the results of field measurements. Currently, the deflection bowl parameter method is one of the methods developed in research in South Africa to provide a more user-friendly method in determining the indication of the bearing capacity of the pavement layers. The use of this method in Indonesia is still limited, so this study aimed to evaluate the suitability of its use on roads in Indonesia. For this purpose, deflection data was collected from several arterial roads on the North Coast of Java Island. The study resulted that the deflection bowl parameter method generally can be applied to roads in Indonesia. However, the method has to be used with caution because of the complexity of the pavement structure layers on the North Coast Road of Java Island, especially for the layers that have undergone major repairs. In addition, the benchmarking process for the deflection bowl parameter criteria also only applied to roads with medium traffic load repetitions (up to 50 million ESAL), so upgrading the limit of the traffic load of the parameters was required so that the parameters could be used for roads with very high traffic load repetition as the one at the North Coast corridor.

One of the consequences of higher mobility is the increase in air pollution. The increase in traffic volume at intersections impacts delays and congestion, thus producing higher air pollution concentrations. This research aimed to identify intersection performance and analyze air quality at existing conditions, then propose traffic management scenarios that increase intersection performance and reduce air pollution at a time. This study was taken on Soekarno-Hatta – M.T. Haryono – D.I. Panjaitan intersection, in Malang. The intersection performance was at the worst level of service (LOS F) for each approach from traffic analysis using the Indonesian Highway Capacity Manual. At this condition, the prediction of air pollutant parameters was out of standard level. The CO concentrate was lower than the standard level, while NO was higher than the standard level. Traffic management was proposed by controlling the movements at the intersection approaches and the number of phases at the intersection. The third alternative can improve intersection performance from F to C and decrease air pollution. The concentration reductions are about ±37.4% for NOx and ±61.3% for CO from the road median to the end of the road.