Cities in developing countries tend to have a high prevalence of atypical vehicles, therefore driving behavior characteristics and demand at intersections may vary. For this reason, the effects of rickshaw incidence on factors such as delays, queue length, and vehicular conflicts are analyzed. This is because rickshaws, being smaller in size and capacity compared to other types of transportation, can have a significant impact on traffic flow and road operations. Through the use of modeling and microsimulation techniques in Vissim 9.0, it is possible to identify the key parameters that contribute to these factors and quantify the specific impact of motorcycle taxis compared to other vehicles. Data collected and processed in the software revealed the influence of rickshaws on average travel times at an intersection, resulting in percentages of 32% for delays, 41% for vehicle conflicts, and...

In many cities around the world, public transportation users must go to stops in advance due to the uncertainty of the bus boarding time. This causes them to stop investing their time in activities such as working, studying or leisure time. This research presents the analysis of the time it takes the average user to reach the station from their point of origin, the waiting times in electronic card recharge queues, the time it takes to reach the bus modules and the waiting time in boarding queues spent by users of a BRT station in Lima. Then, they are compared with an alternative to reduce waiting times based on access to precise information on the time of boarding. To do this, data from a survey carried out within the chosen station on the times of each phase were analyzed. Then, a comparison is made between the conventional situation and a scenario in which users know when they should g...

Vehicle congestion in a city affects users of public and private transport because it generates loss of time and money. However, this problem becomes more complex when there is no formal bus stop system and there are no defined stop zones for various bus lines. For this reason, this article aims to analyze vehicle delays and the capacity of all lanes in a section of an avenue in the center of Lima. Drone recordings were made to represent in a microsimulation model a section with multiple bus stops that generate traffic congestion. After calibrating and validating the model, 2 scenarios were built. The first scenario does not have bus stops along the section, and in the second scenario, bus stops are ordered and established with optimized distances. The results showed that the presence of multiple stops in the first lane generates an increase in vehicle delays of 114 seconds. In addition,...

Currently, one of the worrying problems in vehicular traffic is the large number of cars making left turns at intersections. This phenomenon has generated various challenges in terms of road safety, traffic fluidity and transportation efficiency. To face this situation, today, alternative and innovative solutions are being proposed through the design of unconventional intersections. One of these is the displaced left turn (DLT) intersection. However, given that intersections of this type are few in Peru, it is necessary to evaluate the operational performance of this type of intersections. Therefore, this study evaluates the operability of DLTs using a scenario comparison study based on selected performance measures. For this, the case of a conventional intersection in the city of Lima is evaluated, in which the DLT was implemented in two accesses that have a greater flow of vehicles. Th...

The constant increase of vehicular demand at intersections hurts intersection crossing times and queue formation on avenues. This paper presents a microsimulation model using a stochastic algorithm for traffic signal control based on two variables: queue length formation and crossing time delays. To address this problem, a stochastic algorithm is built using Python software with the total lengths of each traffic light cycle and the two variables to be solved (queue formation and crossing delays) as parameters, and the number of iterations to be performed will be included in the algorithm. These variables will be used as key indicators to obtain the green and red-light duration times for each traffic light at both intersections. To validate the effectiveness of the proposed model, different traffic simulations are performed in the intersection section using Vissim 9.0. Using this microsim...

The presence of soft soils creates a serious problem for road construction. This is because the subgrade has a low CBR value, leading to deformations on the road surface that can affect its stability and durability. To initiate the performance evaluation, laboratory tests were conducted to determine the physical and mechanical properties of the subgrade. In order to establish the parameters considered for developing the steel box test model, the structure comprising the subgrade, geogrid, and base was subjected to cyclic loading using a hydraulic actuator. The reinforcement used between the subgrade and the base was the TX-160 geogrid. The model was subjected to a maximum pressure of 550 MPa using a hydraulic actuator with a contact radius of 200 mm, simulating the contact radius between the base and the wheel. The deformations generated in the unreinforced design under maximum pressure ...

n Peru there are a large number of pavements that are in poor condition. One of the main causes is the submission to tensile stress, which generates deformations in the structure. In the last 20 years, Peru has promoted a favorable policy for the construction of road works. This article evaluates the use of polypropylene in the design of the asphalt mix. This is a material that can be recycled and due to the components, it contains, it can be used to improve the properties of asphalt. To design the mixture, the Marshall test was used, since this test evaluates essential parameters to determine if mechanically it behaves adequately to current standards. On the other hand, the Dynamic Modulus test was used to evaluate the expansions of the proposed asphalt mix. To reduce research costs, it was analyzed computationally with the ANSYS Software, since virtual tests of products and systems can...

In Lima downtown, highly congested intersections with many cyclists and pedestrians can be observed, where conflicts are very common. Therefore, it is important to reduce conflicts to improve the mobility of all users at intersections. At the intersection of Garcilaso de la Vega and 9 de Diciembre avenues, located in the center of Lima, the behavior of the users was observed, especially that of the cyclists, where the spontaneous routes they have adapted to cross the intersection more quickly were visualized. In this study, two scenarios were evaluated: The first scenario used the current fixed traffic light cycle as the geometry of the location, and it also represented how cyclists cross through unplanned routes. In contrast, the second scenario involved adaptive traffic lights and formalized two routes for cyclists, allowing them to choose more than one alternative depending on the pha...

The poor condition of a road causes wear in the mechanics of a vehicle, higher probability of accidents, more traffic and tire wear. To know the conditions of a road it is necessary to monitor the international regularity index (IRI), this calculation is made with different types of manual or automatic recording devices. In Peru, monitoring is done with different types of equipment that, depending on the budget, use different performance and precision systems. At present, manual measurements are still used, which are low cost, but generate errors in the measurement or the process takes too much time and the need to close roads. In this context, the present work aims to automatically monitor the condition of a road through low-cost sensors implemented in an ATV that allows driving in all types of terrain and easily adaptable to ATVs used for patrolling in Peru. Although there are superior...

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

Roundabouts allow a continuous vehicular flow and a greater traffic capacity compared to conventional intersections. This alternative makes it possible to improve the critical situation at some points on the main roads. However, its efficiency is reduced when the structure has a reduced area. Likewise, the presence of heavy vehicles affects the continuous circulation of other vehicles because they occupy more than one lane to make the turn correctly. Therefore, there are many vehicle conflicts, delays and queues. This research aims to evaluate conflicts in a roundabout with a reduced area. Then, in scenario 1, the heavy vehicles in the roundabout under study were replaced by cars to evaluate the influence of heavy vehicles through the variation of vehicular conflicts. Finally, compare a second scenario of a roundabout with defined lanes for heavy vehicles inside the central island. The d...

Rutting or rutting in asphalt pavements is one of the most frequent failures and is due to excessive stress to which the inner layers are subjected. Due to this problem, a way to increase rutting resistance was developed in this research. Therefore, mixtures of conventional asphalt were prepared with the addition of polypropylene, obtained from recycled face masks, in percentages of 0.5%, 1.0% and 1.5%. The polypropylene functions as a binding agent. Based on the results of the study, the mixture that had 0.5% of fibers presented a slight increase in stability compared to the conventional mixture, while in the other mixtures the stability decreased, since the percentage of voids increased. Likewise, the value of the modulus of elasticity, which was not obtained in the laboratory tests, was found by means of a computational simulation (ANSYS). This value is necessary to obtain the rutting...

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.

The accelerated deterioration of roads is conditioned by parameters such as climate change, poor construction, and heavy vehicle traffic. Two relevant measures to monitor the condition of a road are the International Roughness Index (IRI) and the number of functional failures in a segment, mainly potholes, since they are associated with higher risks such as accidents or damage to vehicle mechanics. In the state of the art, pothole detection or International Roughness Index (IRI) calculation algorithms are proposed, but they use vehicles designed to produce less vibration and use phones that decrease the performance of the embedded sensors. In addition, some works propose complex algorithms of higher computational load that leads to use more hardware and power consumption. In this context, the present work aims to monitor the condition of a road through low-cost dedicated sensors implemen...