The Intersection Between Highway and Railway at the JPL 295 in District of Lamongan

Abstract

The intersection between highway and railway (commonly known as JPL), precisely at the JPL 295 in District of Lamongan, is the level crossing which separates two residential areas from the northern and southern sides and is next to the highway. There are other JPL nearby JPL 295 which also separate residential areas located 180 m away to the left and 290 m to the right of JPL 295. These two JPL have single narrow median opening only available to accommodate motorcycle movements. Based on the qualitative observation results at the field, people utilize JPL 295 as the main intersection as indicated from the highest significant traffic flow compared to other JPL. Thus, this research focuses on JPL 295. Double-track railway is available at JPL 295 which indicates relatively high volume of railway traffic. Hence, barrier gates are not included as the main safety system. The focus of this research is on the potentials that may cause accident. Swedish TCT method was implemented in this research in order to provide information in term of road user characteristics involved in conflicts with other road or rail users. It is by calculating the Time to Accident (TA) and Conflict Speed (CS) from every direction and vehicle involved in conflicts and plotting them in the severity level curve. The obtained results are: (1) direction B and C are categorized as severe traffic conflict by 53%, (2) direction B1 and C1 are categorized as severe traffic conflict by 57%, (3) direction D and E are categorized as severe traffic conflict by 77%, (4) direction A vehicle toward train are categorized as severe traffic conflict by 40%, (5) direction B2 vehicle toward train are categorized as severe traffic conflict by 20%. If given a tolerated conflict value by 50%, certain treatments must be performed when reaching the maximum point to lower the level of resulted severe conflict.