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61,005 resultsShowing papers similar to Influence of road roughness and slope on the accumulation and distribution of tire-wear particles and heavy metals in road dust
ClearConcentration of Microplastics in Road Dust as a Function of the Drying Period—A Case Study in G City, Korea
Microplastic concentrations in road dust were measured as a function of dry weather duration in a Korean city, finding that plastic levels increased with longer drying periods and were dominated by tire wear and road marking particles. The results suggest that dry periods followed by rainfall events create pulses of microplastic runoff from road surfaces.
Realistic evaluation of tire wear particle emissions and their driving factors on different road types
This study measured tire wear particle (TWP) emissions under realistic driving conditions on different road types and identified the key driving factors affecting emission rates. Tire wear particles are a major category of microplastic pollution in road runoff, and this data is needed to estimate their contribution to environmental contamination.
Characterization of tire and road wear microplastics and phthalates in inhalable PM10 road Dust: Implications for urban air pollution
Researchers conducted the first combined analysis of tire wear microplastics and phthalate chemicals in breathable road dust from Seoul, Korea. They found higher concentrations in industrial areas compared to residential zones, and smaller airborne particles showed different rubber compositions than larger dust, suggesting they come from different wear processes. The study raises concerns about inhalation exposure to tire-derived microplastics and associated chemicals in urban settings.
Concentrations of tire wear microplastics and other traffic-derived non-exhaust particles in the road environment
Researchers measured actual environmental concentrations of tire wear microplastics and other traffic-derived non-exhaust particles in a rural highway setting, providing field-based data to complement the theoretical estimates that dominate current literature.
Types and concentrations of tire wear particles (TWPs) in road dust generated in slow lanes.
Road dust samples collected near traffic lights contained tire wear particles (TWPs), with the concentration and size distribution varying by location and traffic direction. Tire wear is one of the largest sources of microplastic pollution in urban environments, and these particles are carried into waterways by stormwater runoff.
Microplastic and tyre wear particles at a highway: a case study from Norway
Researchers monitored microplastics and tire wear particles (tiny rubber fragments shed by vehicles) in air, road runoff, and road dust along a busy Norwegian highway, finding the highest concentrations in road dust and the lowest in air. The study demonstrates that traffic is a major source of microplastic pollution across multiple environmental pathways.
Features of the highway road network that generate or retain tyre wear particles
This study analyzed highway road network features that contribute to tyre wear particle generation and retention, finding that road curvature, gradient, and surface texture are key factors influencing where tyre-derived microplastics accumulate along road corridors.
On airborne tire wear particles along roads with different traffic characteristics using passive sampling and optical microscopy, single particle SEM/EDX, and µ-ATR-FTIR analyses
Researchers used passive sampling and advanced analytical techniques including SEM/EDX and micro-ATR-FTIR to characterize airborne tire wear particles along roads with different traffic volumes and speeds. The study found that tire wear particles, a major category of microplastic pollution, varied in concentration and composition depending on traffic characteristics, highlighting roadways as a significant source of airborne microplastic contamination.
Explorations of tire and road wear microplastics in road dust PM2.5 at eight megacities in China
Researchers measured tire and road wear microplastics in road dust from eight major Chinese cities. They found the highest concentrations in northern cities like Lanzhou and Xi'an, likely due to drier conditions increasing road friction, with levels ranging from 86 to 175 micrograms per gram. The study also found correlations between these microplastics and markers of cellular damage, suggesting potential health implications from exposure to tire-derived particles in urban road dust.
Identification, classification and quantification of microplastics in road dust and stormwater
Researchers identified and quantified microplastics in road dust and stormwater, finding significantly higher concentrations in industrial areas compared to residential zones, with tire wear particles and polyethylene fragments being the most common types.
Comparison of traffic-related micro- and nanoplastic concentrations at three urban locations
Researchers measured airborne tire and road wear particles (microplastics shed from vehicle tires) at a busy urban road, a highway, and a park, finding rubber particle concentrations were 2-5 times higher near traffic compared to the park, with levels closely tracking other traffic pollutants like black carbon.
Mitigation of Suspendable Road Dust in a Subpolar, Oceanic Climate
Tire and road wear particles (TRWP), a major source of microplastics in waterways, are especially abundant in cold climates where studded tires are common. This study assessed road dust generation and found that traffic volume and road surface conditions are key drivers of TRWP pollution.
Tire-additive chemicals and their derivatives in urban road dust: Spatial distributions, exposures, and associations with tire and road wear particles
Researchers measured tire-related chemicals and tire wear particles in road dust from Hong Kong and Berlin, finding that highway dust contained up to five times more contamination than other road types. Several of these tire-derived chemicals are linked to health risks including hormone disruption and cardiovascular problems, and the study found that people living near busy roads face higher exposure through accidental dust ingestion.
On-Road Vehicle Measurement of Tire Wear Particle Emissions and Approach for Emission Prediction
An instrumented measurement vehicle was developed to quantify tire wear particle emissions under real-world on-road conditions, identifying key driving parameters such as speed, load, and cornering that govern emission rates. The study supports the development of emission factors and regulatory standards for non-exhaust tire-derived microplastic pollution.
Elucidation of the Actual State of Existence of Tire-derived Microplastics at Intersections
Researchers sampled road dust at straight road sections and intersections in two areas of Japan and used FTIR to identify tire-derived microplastics, finding higher MP counts in high-traffic areas and at intersection points where multi-directional vehicle movement and turning occur.
Occurrence and characteristics of microplastics in surface road dust in Kusatsu (Japan), Da Nang (Vietnam), and Kathmandu (Nepal)
Microplastics were detected in road dust sampled from three Asian cities (Kusatsu in Japan, Da Nang in Vietnam, and Kathmandu in Nepal), with concentrations and polymer types varying by city and sampling location. The study demonstrates that road surfaces are a major reservoir of microplastics in urban environments across diverse Asian contexts.
Development of a parametrized and regionalized life cycle inventory model for tire and road wear particles
Researchers developed a detailed model for estimating tire and road wear particle emissions, a major but often overlooked source of microplastics from vehicle traffic. The model accounts for nine key factors including road texture, driving behavior, temperature, and tire type, and can generate estimates at both individual vehicle and national scales. The study found that road surface roughness, aggressive driving, and wet conditions are the biggest drivers of large particle emissions, while temperature and vehicle load most affect fine particle release.
Resuspension of microplastics and microrubbers in a semi-arid urban environment (Shiraz, Iran)
Researchers quantified airborne microplastics and microrubbers in road dust across Shiraz, Iran, finding significant resuspension of particles up to 177 cm above road level, highlighting an underappreciated exposure pathway for urban populations.
Modelled atmospheric concentration of tyre wear in an urban environment
Researchers modeled airborne concentrations of tire wear particles — tiny plastic-containing fragments released when vehicle tires rub against road surfaces — across Stockholm, finding that these microplastic particles are widespread in cities and make up 4–6% of total air particle pollution, with concentrations highest near busy highways and in narrow street canyons.
Occurrence of tire-derived microplastics (TMPs) focusing on driving behavior
Researchers analyzed tire-derived microplastics (tiny rubber particles shed from vehicle tires) on roadways and found their abundance increased with traffic volume and was further boosted by hard braking — with aggressive braking increasing particle counts by about 28%. These tire particles are a major source of microplastic contamination entering waterways from roads.
Differentiating and Quantifying Carbonaceous (Tire, Bitumen, and Road Marking Wear) and Non-carbonaceous (Metals, Minerals, and Glass Beads) Non-exhaust Particles in Road Dust Samples from a Traffic Environment
Researchers used automated electron microscopy combined with machine learning to identify and count different types of microplastic and wear particles in road dust, finding that tire and bitumen wear particles made up about 19-22% of particles in traffic environments. The method provides a fast, non-destructive way to quantify the types of traffic-generated microplastics polluting urban environments.
Occurrence and risk associated with urban road-deposited microplastics
Researchers collected and analyzed microplastics deposited on urban roads and found average concentrations ranging from 0.33 to 3.64 grams per square meter, with significant variation based on land use and particle size. Road-deposited microplastics were mainly fibers and fragments from tire wear and textile sources, and their risk assessment indicated moderate ecological concern. The study provides new insights into how different urban environments contribute to microplastic pollution through road runoff.
Urban wash-off of tire wear particles
Researchers used a rainfall simulator to study how tire wear particles, an important class of microplastics, are washed off road surfaces during storm events. They found that low surface roughness, high rainfall intensity, and low slope produced the fastest and most complete mobilization of tire wear particles. The study reveals that larger tire particles moved faster than smaller ones, and flow depth was the most important factor governing wash-off behavior.
Characteristics of Vehicle Tire and Road Wear Particles’ Size Distribution and Influencing Factors Examined via Laboratory Test
Researchers conducted laboratory tests to characterize the size distribution of tire and road wear particles under various conditions. The study found that factors such as driving speed, tire composition, and road surface characteristics significantly influence the size and quantity of wear particles released, which are a growing source of microplastic pollution.