In general, the geometric planning of roads is done manually using drawing tools and mathematical techniques. When done manually, geometric design is complicated, time-consuming, and prone to errors. Therefore, this study will use AutoCAD Civil 3D®. This study aims to redesign the Trans Flores road because of the frequent accidents found on curves and climbs and the current road drops on the Trans Flores road. This study will use research methods using secondary data and qualitative research methods. When designing geometric roads using AutoCAD Civil 3D®,  data from Google Maps, Google Earth, and Global Mapping is also required. This research will focus on the 3.5 km of road traffic starting from Sta 0+000 to Sta 3+500. The result of this study is that corners P1-P4 are planned with the type of Bend S-C-S. By using AutoCAD Civil 3D®, this research can be completed quickly and accurately.

Transport is the key to any country's development; thus, roads, railways, airways, and waterways have been developed for rapid urbanization and mobility. Nevertheless, many cities in the world are facing uncontrolled growth in traffic volumes, one of which is congestion. Traffic congestion is one of the most severe problems in many cities worldwide. This problem is even more pronounced in developing countries due to the rapid population and economic growth. Population and economic growth promote the expansion of urban areas and the use of cars, which leads to traffic jams. The level of road service, delays, and queue length cause congestion. Therefore, this study aims to determine the level of road service due to crossing a railway plot. The method used in this study is a direct observation or survey method, which directly calculates the volume of the vehicle, the length of delay, and the actual queue length of the field. Based on the results of research conducted on the Cisauk Highway regarding the level of road service due to the closure of the train door bars, it was concluded that the Cisauk Highway obtained a Level of Service (LoS) value of 1,674, categorized as F with the definition of forced current conditions, low speed, volume above capacity, and long queues (traffic jams). The researchers also obtained the results of the most comprehensive delay survey at 18.23 of 223 seconds, with the most extended queue length of 524 meters for the Serpong direction and 267 meters for the Cisauk direction.

An intersection is the confluence of different directions of the road. In general, traffic conflicts often occur in intersectional areas. Congestion can occur due to the dense volume of vehicles and the absence of traffic lights. This study aims to determine the performance of an uncited intersection in accommodating vehicles passing through it. What this means is that this unlicensed interchange does not cause congestion due to the irregularity of the driver of the vehicle. Primary data collection in this study was carried out directly, namely recording the size of the road width at the intersection and taking survey data on the number of vehicles directly at the intersection. After analyzing the calculation results, it was found that the road capacity value (C) was obtained at 3469 pcu/hour. This value is below the maximum base capacity (Co = 5144.42 smp/h). Based on the results of calculation analysis from survey data, it shows the value of the degree of saturation (DS) of 0.67 sec/pcu. If the degree of saturation (DS) is <0.70, then the degree of saturation at the intersection falls into the low category. In the calculation obtained, the probability of queuing at the intersection (QP) is 19 - 38%.

Horizontal alignment belongs to the aspect of the geometric design of the road. Jalan Subang - Cikamurang, located in Indramayu, West Java, is planned to have three horizontal alignments. This design aims to connect Subang and Cikamurang to shorten the travel time for the surrounding community's needs. This research uses the Bina Marga method, referring to the 2021 Road Geometric Design Guidelines. First, road traffic data is obtained from the google earth application and then processed with a manual method to determine the coordinates of the road traffic and the location of horizontal alignment. Then the data obtained is processed by referring to the Bina Marga method to design horizontal alignment. Jalan Subang - Cikamurang is a Primary Local Road (Arterial Road), Primary Collector, and class III C road type. Three horizontal alignments with Spiral-Circle-Spiral (SCS) type, the first horizontal alignment is at STA 0+544.018 – 0+819.445, the second horizontal alignment is at STA 1+224.778 – 1+474.695, and the third horizontal alignment is at STA 1+763 – 2+164.390.