The gender gap in the acceptance of automated vehicles in Europe

Previous research suggests that there might be a gender gap in the acceptance of automated vehicles (AVs): males are typically found to have a higher intention to use AVs than females, although opposite results have been reported in different countries. The conflicting results have yet to be addressed, and only a few studies have attempted to explain the country-level differences based on quantifiable socio-economic indicators. We investigated the gender gap in the acceptance of AVs (SAE Level 3) using a questionnaire study among 8412 car-drivers in eight European countries as part of the European L3Pilot project. For this study, the gender gap in the acceptance of AVs is defined as the difference in the willingness to use, buy and activate the automated driving function in AVs between men and women. Results showed two distinct realities for Europe: in one group of countries, females were less willing to use AVs than males, while in another group, both males and females had similar acceptance towards AVs with higher ratings overall. These country groups were different in terms of Gross Domestic Product (GDP) per capita and the Gender Equality Index (GEI). The gender gap in the acceptance of AVs was larger in countries with a higher GDP and GEI. The study findings suggest that the gender gap in the acceptance of AVs is not universal, and the countries’ progress in economics and gender equality are related to people's attitudes toward AVs. This finding enhances policy development and planning future transport solutions to ensure that all potential users can benefit from AVs

CHARACTERIZATION OF PLUTONIUM CONTAMINATED SOILS FROM THE NEVADA TEST SITE IN SUPPORT OF EVALUATION OF REMEDIATION TECHNOLOGIES

ABSTRACT The removal of plutonium from Nevada Test Site (NTS) area soils has previously been attempted using various combinations of attrition scrubbing, size classification, gravitybased separation, flotation, air flotation, segmented gate, bioremediation, magnetic separation and vitrification. Results were less than encouraging, but the processes were not fully optimized. To support additional vendor treatability studies soil from the Clean Slate II site (located on the Tonopah Test Range, north of the NTS) were characterized and tested. These particular soils from the NTS are contaminated primarily with plutonium-239/240 and Am-241. Soils were characterized for Pu-239/240, Am-241 and gross alpha. In addition, wet sieving and the subsequent characterization were performed on soils before and after attrition scrubbing to determine the particle size distribution and the distribution of Pu-239/240 and gross alpha as a function of particle size. Sequential extraction was performed on untreated soil to provide information about how tightly bound the plutonium was to the soil. Magnetic separation was performed to determine if this could be useful as part of a treatment approach. The results indicate that about a 40% volume reduction of contaminated soil should be achievable by removing the >300 um size fraction of the soil. Attrition scrubbing does not effect particle size distribution, but does result in a slight shift of plutonium distribution to the fines. As such, attrition scrubbing may be able to slightly increase the ability to separate plutonium-contaminated particles from clean soil. This could add another 5-10% to the mass of the clean soil, bringing the total clean soil to 45-50%. Additional testing would be needed to determine the value of using attrition scrubbing as well as screening the soil through a sieve size slightly smaller than 300 um. Since only attrition scrubbing and wet sieving would be needed to attain this, it would be good to conduct this investigation. Magnetic separation did not work well. The sequential extraction studies indicated that a significant amount of plutonium was soluble in the "organic" and "resistant" extracts. As such chemical extraction based on these or similar extractants should also be considered as a possible treatment approach. WM '03 Conference, February 23-27, 2003 , Tucson, AZ 2 INTRODUCTION The removal of plutonium from Nevada Test Site (NTS) area soils has previously been attempted using various combinations of attrition, scrubbing, size classification, gravitybased separation, flotation, air flotation, segmented gate, bioremediation, magnetic separation, and vitrification (1). Results were less than encouraging, but the processes were not fully optimized. There is an opportunity for significant improvement through the utilization of more in depth studies

Using pupillometry and gaze-based metrics for understanding drivers’ mental workload during automated driving

This Horizon2020-funded driving simulator-based study on automated driving investigated the effect of different car-following scenarios, and takeover situations, on drivers’ mental workload, as measured by eye tracking-based metrics of pupil diameter and self-reported workload ratings. This study incorporated a mixed design format, with 16 drivers recruited for the SAE Level 2 (L2; SAE International, 2021) automation group, who were asked to monitor the driving and road environment during automation, and 16 drivers in the Level 3 (L3) automation group, who engaged in a non-driving related task (NDRT; Arrows task) during automation. Drivers in each group undertook two experimental drives, lasting about 18 min each. To manipulate perceived workload, difficulty of the driving task was controlled by incorporating a lead vehicle which maintained either a Short (0.5 s) or Long (1.5 s) Time Headway (THW) condition during automated car-following (ACF). Each ACF session was followed by a subsequent request to takeover, which happened either in the presence or absence of a lead vehicle. Results from standard deviation of pupil diameter values indicated that drivers’ mental workload levels fluctuated significantly more when monitoring the drive during L2 ACF, compared to manual car-following (MCF). Additionally, we found that drivers’ mental workload, as indicated by their mean pupil diameter, increased steeply around takeovers, and was further exacerbated by the presence of a lead vehicle during the takeovers, especially in the Short THW condition, for both groups. Pupil diameter was found to be sensitive to subtle variations in mental workload, and closely resembled the trend seen in self-reported workload ratings. Further research is warranted to assess the feasibility of using eye-tracking-based metrics along with other physiological sensors, especially in real-world settings, to understand whether they can be used as real-time indicators of drivers’ mental workload, in future driver state monitoring systems

E-mobility solutions for urban transportation:User needs across four continents

Aiming at setting up a global platform for e-mobility solutions, the EU-funded project SOLUTIONSplus (2020–2023) established nine living labs in Africa, Asia, Europe, and Latin America to test innovative solutions involving new services, business models, vehicle types, and charging systems. A user needs analysis was undertaken in all project cities. The paper summarizes the main findings of this analysis and investigates the effect of the external environment on user needs. The perceived importance of electric vehicles in mobility patterns, quality of life, and city environment is examined, along with expected challenges in the respective market penetration. It is found that these perceptions are correlated with external factors such as air pollution or traffic congestion, leading to possible adjustments of the e-mobility promoting efforts according to the local stakeholder priorities

Do males and females prefer different non-driving related activities during automated driving?

We investigated gender differences in the willingness to use travel time for Non-Driving Related Tasks (NDRs) in conditionally automated vehicles (SAE Level 3) using a questionnaire study among 8,412 car-drivers in eight European countries (Germany, Italy, Netherlands, Poland, Romania, Spain, Sweden, and the United Kingdom), as part of the European L3Pilot project. Participants’ responses to what activities they would like to perform while the automated driving is activated were investigated. Results reveal that females were more willing to engage in NDRTs than males for nine out of 12 investigated activities. This study informs about gender differences in engagement with NDRTs which will help in policy development and future interior vehicle design to ensure that all potential users can benefit from AVs

Characterization of Plutonium Contaminated Soils From the Nevada Test Site in Support of Evaluation of Remediation Technologies

The removal of plutonium from Nevada Test Site (NTS) area soils has previously been attempted using various combinations of attrition scrubbing, size classification, gravity based separation, flotation, air flotation, segmented gate, bioremediation, magnetic separation and vitrification. Results were less than encouraging, but the processes were not fully optimized. To support additional vendor treatability studies soil from the Clean Slate II site (located on the Tonopah Test Range, north of the NTS) were characterized and tested. These particular soils from the NTS are contaminated primarily with plutonium-239/240 and Am-241. Soils were characterized for Pu-239/240, Am-241 and gross alpha. In addition, wet sieving and the subsequent characterization were performed on soils before and after attrition scrubbing to determine the particle size distribution and the distribution of Pu- 239/240 and gross alpha as a function of particle size. Sequential extraction was performed on untreated soil to provide information about how tightly bound the plutonium was to the soil. Magnetic separation was performed to determine if this could be useful as part of a treatment approach. The results indicate that about a 40% volume reduction of contaminated soil should be achievable by removing the >300 um size fraction of the soil. Attrition scrubbing does not effect particle size distribution, but does result in a slight shift of plutonium distribution to the fines. As such, attrition scrubbing may be able to slightly increase the ability to separate plutonium-contaminated particles from clean soil. This could add another 5-10% to the mass of the clean soil, bringing the total clean soil to 45-50%. Additional testing would be needed to determine the value of using attrition scrubbing as well as screening the soil through a sieve size slightly smaller than 300 um. Since only attrition scrubbing and wet sieving would be needed to attain this, it would be good to conduct this investigation. Magnetic separation did not work well. The sequential extraction studies indicated that a significant amount of plutonium was soluble in the ''organic'' and ''resistant'' extracts. As such chemical extraction based on these or similar extractants should also be considered as a possible treatment approach