Study of Road Damage Potentials of Mixed Traffic

2000 ◽  
Author(s):  
José A. Romero ◽  
Alejandro Lozano
Keyword(s):  
Dynamic Response ◽  
Considerable Reduction ◽  
Mixed Traffic ◽  
Stored Energy ◽  
Heavy Vehicles ◽  
Dynamic Interactions ◽  
Traffic Distribution ◽  
Pavement Response ◽  
Traffic Speed ◽  
Pavement Damage

Abstract Dynamic interactions between the mixed traffic situations and the pavement are investigated through analysis of accumulated stored energy within the pavement. The proposed methodology integrates the dynamic response of heavy vehicles population within the mixed traffic with the primary pavement response and an objective pavement damage measure. The results attained from the proposed methodology revealed reasonably good correlation with the AASHO data on the rut depth. The proposed methodology is applied to establish the influence of traffic distribution, time of the day, weather temperature condition, average traffic speed and the type of traffic distribution on the accumulated stored energy of the pavement. The results show that a uniform traffic distribution can yield considerable reduction in the stored energy and thus the damage potentials of the mixed traffic.

Effect of flotation tires used for agricultural field equipment on flexible pavement damage

2019 ◽  
Vol 46 (6) ◽  
pp. 501-510 ◽  
Author(s):  
Jean-Pascal Bilodeau ◽  
Damien Grellet ◽  
Guy Doré ◽  
Maurice Phénix
Keyword(s):  
Experimental Research ◽  
Damage Mechanism ◽  
Flexible Pavement ◽  
Pavement Performance ◽  
Agricultural Field ◽  
Tire Pressure ◽  
Field Equipment ◽  
Truck Tires ◽  
Pavement Response ◽  
Pavement Damage

Agricultural field equipment are typically equipped with wide single tires with particular tire tread and low inflation working pressures. Because of the significant differences with standard truck tires, the effect of flotation implement tire on pavement performance and load associated damage is likely to differ. This paper presents the results of an experimental research project where flotation tires were used to test the response of an instrumented flexible pavement built in an indoor test pit. The effect of load, tire pressure, and tire type was investigated as part of the study. Based on the collected results, the tire type and design greatly influence the pavement response. The critical and governing pavement damage mechanism was found to be subgrade structural rutting. Wide specialty tires were found to generally induce less damage than standard truck tires. A method for axle weight adjustment for wide farm tires was proposed as part of the project.

scholarly journals EVALUATING THE EFFECT OF HEAVY VEHICLES ON TRAFFIC PARAMETERS BY USING HEAVY VEHICLE FACTOR

2018 ◽  
Vol 6 (4) ◽  
pp. 95-104
Author(s):  
Parthkumar Patel ◽  
H.R. Varia
Keyword(s):  
Travel Time ◽  
Traffic Flow ◽  
Road Traffic ◽  
Freight Transport ◽  
Heavy Vehicle ◽  
Mixed Traffic ◽  
Heavy Vehicles ◽  
Highway Traffic ◽  
Ideal Situation ◽  
The Impact

Safe, convenient and timely transportation of goods and passengers is necessary for development of nation. After independence road traffic is increased manifold in India. Modal share of freight transport is shifted from Railway to roadways in India. Road infrastructures continuously increased from past few decades but there is still need for new roads to be build and more than three forth of the roads having mixed traffic plying on it. The impact of freight vehicles on highway traffic is enormous as they are moving with slow speeds. Nature of traffic flow is dependent on various traffic parameters such as speed, density, volume and travel time etc. As per ideal situation these traffic parameters should remain intact, but it is greatly affected by presence of heavy vehicle in mixed traffic due to Svehicles plying on two lane roads. Heavy vehicles affect the traffic flow because of their length and size and acceleration/deceleration characteristics.  This study is aimed to analyse the impact of heavy vehicles on traffic parameters.

Simulation Modeling of Pedestrian Performance in the New Synchronized and Milwaukee B Interchanges versus Existing Designs

2018 ◽  
Vol 2672 (35) ◽  
pp. 151-160 ◽  
Author(s):  
Amirarsalan Mehrara Molan ◽  
Joseph E. Hummer
Keyword(s):  
Travel Time ◽  
Negative Impact ◽  
Heavy Vehicles ◽  
Traffic Distribution ◽  
Significant Negative Impact ◽  
Pedestrian Travel ◽  
Safe Condition ◽  
Vehicle Travel Time ◽  
Traffic Operation ◽  
The Impact

Most U.S. highway agencies recognize the importance of designing safe, short, and comfortable paths for pedestrians. Providing such an acceptable condition for pedestrians requires specific attention at intersections and service interchanges due to their interaction with other modes of transportation. The main objective of this research was to analyze pedestrian operation at two new service interchanges—the synchronized and Milwaukee B interchanges—in comparison with four existing designs. The analysis consists of three main parts: (1) a general comparison among the designs for pedestrian performances in terms of safety, travel time, and the level of service; (2) investigation of the effects of vehicles on pedestrian performance; and (3) modeling the impact of pedestrians on the traffic operation of vehicles. A comprehensive series of simulation tests were run using VISSIM and Synchro to study the pedestrian performance of interchanges in various situations of traffic volume, turning traffic ratio, traffic distribution, and percentage of heavy vehicles. The results indicated that a relatively safe condition is expected for pedestrians in the proposed new designs in comparison with the existing interchanges; however, the pedestrians’ travel time was lower in all the existing designs than in the new designs except the diverging diamond interchange (DDI). The DDI, one of the most popular alternative interchanges, showed the worst performance in all the aspects of the pedestrian analysis. Despite the very good performance of conventional diamond interchange regarding pedestrian travel time and safety, pedestrians could have a significant negative impact on vehicle travel time through a diamond.

Coupling analysis of transient aerodynamic and dynamic response of articulated heavy vehicles under crosswinds

2022 ◽  
Vol 34 (1) ◽  
pp. 212013
Author(s):  
Qianwen Zhang ◽  
Chuqi Su ◽  
Makoto Tsubokura ◽  
Zhen Hu ◽  
Yiping Wang
Keyword(s):  
Dynamic Response ◽  
Heavy Vehicles ◽  
Coupling Analysis

Limitations of Passenger-Car Equivalent Derivation for Traffic Streams with More Than One Truck Type

2003 ◽  
Vol 1852 (1) ◽  
pp. 96-104 ◽  
Author(s):  
Sergio Henrique Demarchi ◽  
José Reynaldo Setti
Keyword(s):  
Quantitative Analysis ◽  
Mixed Traffic ◽  
Heavy Vehicles ◽  
Passenger Car ◽  
Flow Rates ◽  
Traffic Stream ◽  
Passenger Car Equivalent ◽  
Traffic Composition ◽  
The One ◽  
The Impact

Heavy vehicles can have a major impact on traffic streams, particularly on grades. Traditionally, these impacts have been expressed in terms of a passenger-car equivalent (PCE), which is used to convert a mixed traffic stream into a hypothetical passenger-car stream. When the stream contains more than one truck type and truck characteristics differ significantly, it would be desirable to derive PCEs for each truck type. Limitations of current methods of PCE derivation are discussed, and it is demonstrated that PCEs derived individually for each truck type account for only part of the impact caused by trucks on traffic. As a result, distortions are created in the estimation of equivalent flow rates when the traffic composition is different from the one used in the derivation of PCEs. A work-around solution based on the estimation of an aggregate PCE is discussed, and a quantitative analysis of the errors associated with the use of each type of PCE is presented. The results indicate that the errors in the estimation of equivalent flow rates are negligible for densities less than 10 veh/(km-lane) but increase significantly with the increase in density. Equivalent flow rates calculated with aggregate PCEs are not exempt from errors, especially if the traffic mix is different from the one used for the base stream, but these errors were found to be smaller than those caused by the use of PCEs derived individually for each truck type.

Impact of Buses on Highway Infrastructure: Case Study for New Jersey State

2003 ◽  
Vol 1841 (1) ◽  
pp. 32-40 ◽  
Author(s):  
Maria Boilé ◽  
Preethi Narayanan ◽  
Kaan Ozbay
Keyword(s):  
New Jersey ◽  
Cost Allocation ◽  
Simulation Models ◽  
Maintenance Cost ◽  
Heavy Vehicles ◽  
Vehicle Class ◽  
Pavement Maintenance ◽  
Highway Infrastructure ◽  
Industry Standards ◽  
Pavement Damage

Buses are classified as heavy vehicles, and research has shown that heavy vehicles are mainly responsible for pavement damage and costs incurred to rectify the damage. Transit agencies must consider the pavement damage caused by a bus when choosing among different types of buses for procurement for certain corridors and deciding on the type of transit service for a corridor. Also, bus contribution to pavement damage should be considered in determining the appropriate amount of taxes and fees to be paid by this vehicle class. Currently, no tool exists to support such decisions. Pertinent literature was reviewed to determine the availability of methods for allocating roadway maintenance costs to buses. Two broad areas of highway impact–related literature, highway cost allocation studies and methods to estimate pavement deterioration resulting from vehicle–pavement interactions, were examined. A review of several state cost allocation studies showed that either equivalent single-axle loads (ESALs) or ESALS weighted by vehicle miles traveled were used to allocate pavement maintenance cost to various vehicle classes. Those studies, however, either accounted for buses by grouping them with other vehicles or did not account for them at all. Currently, no bus–pavement interaction models are available, although several mathematical and simulation models are available for truck-pavement interaction. Buses differ from trucks in load distribution, suspension, and travel characteristics. From results of the literature search a methodology, which uses industry standards and is minimal in data requirements, has been developed. With the use of data available in New Jersey, the application of this methodology showed that the maintenance cost attributable to buses in the state is about 2.4% of the total maintenance cost.

Theoretical Road Damage Due to Dynamic Tyre Forces of Heavy Vehicles Part 1: Dynamic Analysis of Vehicles and Road Surfaces

1988 ◽  
Vol 202 (2) ◽  
pp. 103-108 ◽  
Author(s):  
D Cebon
Keyword(s):  
Dynamic Response ◽  
Dynamic Analysis ◽  
Full Scale ◽  
Heavy Vehicles ◽  
Road Vehicles ◽  
Vehicle Simulation ◽  
The Road ◽  
Road Surfaces ◽  
Full Scale Tests

Theory is presented for simulating the dynamic wheel forces generated by heavy road vehicles and the resulting dynamic response of road surfaces to these loads. Sample calculations are provided and the vehicle simulation is validated with data from full-scale tests. The methods are used in the accompanying paper to simulate the road damage done by a tandem-axle vehicle.

scholarly journals Creep model to determine rut development by autonomous truck axles on pavement

2021 ◽  
Author(s):  
Mohammad Fahad ◽  
Richard Nagy ◽  
Peter Fuleki
Keyword(s):  
Creep Model ◽  
Traffic Speed ◽  
Pavement Damage ◽  
Lateral Positioning

AbstractImpacts of autonomous truck’s passes on pavement have been analyzed in this research. Two types of lateral positioning namely zero wander and uniform wander along with a super single wide tire and a dual tire have been analyzed with variable traffic speeds in ABQUS. The study concludes with the results in favor of usage of a super single wide tire under a uniform wander mode. The highest amount of pavement damage in terms of maximum rut depth is caused by the dual wheel assembly moving under a zero-wander mode. The magnitude of rut depth increases by a factor of two when a dual tire assembly is used instead of a wide tire assembly. At a uniform wander mode, rut depth increases by 0.2 mm for every 10 km/h decrease in traffic speed within 90 km/h to 70 km/h range.

Effect of Off-Road Equipment on Flexible Pavements

2003 ◽  
Vol 1821 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Peter E. Sebaaly ◽  
Raj Siddharthan ◽  
Magdy El-Desouky ◽  
Dan Strand ◽  
David Huft
Keyword(s):  
Flexible Pavements ◽  
Field Tests ◽  
Field Testing ◽  
Load Level ◽  
Agricultural Equipment ◽  
Heavy Equipment ◽  
Load Limit ◽  
Pavement Response ◽  
Pavement Damage ◽  
The Impact

The South Dakota Department of Transportation sponsored a study to evaluate the effect of agricultural equipment on flexible pavements. One thin and one thick flexible pavement were instrumented at two locations and tested under agricultural equipment. Each section was instrumented with pressure cells in the base and subgrade, surface deflection gauges, and strain gauges at the bottom of the asphalt layer. Field tests were carried out during fall 2000, spring 2001, and summer 2001 to evaluate the impact of heavy equipment on flexible pavements under variable environmental conditions. Test vehicles included two types of Terra-Gators, a grain cart, and a tracked tractor. The field-testing program collected the pavement responses under five replicates of each combination of test vehicle and load level and under the 18,000-lb singleaxle truck. Data were examined for repeatability; the average of the most repeatable set of measurements was calculated and used in the analysis. The first part of the research evaluated the relative impact of the equipment defined as the ratio of pavement response under each combination of vehicle-load level over the pavement response under the 18,000-lb single-axle truck. The analysis of the pavement response ratios indicated that ( a) the tracked tractor is not more damaging than the 18,000-lb single-axle truck, ( b) Terra-Gators 8103 and 8144 are more damaging than the 18,000-lb single-axle truck only when fully loaded, and ( c) the grain cart is more damaging than the 18,000-lb single-axle truck only when loaded over the legal load limit. Data from the second part of the research showed that transporting the commodities using tridem-axle trucks caused far less pavement damage than transporting commodities on agricultural equipment.

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