A challenge in presenting augmenting information outdoor augmented reality (AR) settings lies the broad range of uncontrollable environmental conditions that may be present, specifically large-scale fluctuations natural lighting and wide variations likely backgrounds or objects scene. In this paper, we present a active AR testbed samples user's field view, collects illuminance values at participant's position. The main contribution presented herein is user-based study (conducted using...

Departments of Transportation (DOTs) rely heavily on chloride-based treatments for winter road maintenance despite the well-documented effects these chemicals infrastructure and environment. Proposed alternative have yet to be widely adopted because economic technical limitations that are largely outside control DOT. This work explores application with a life-cycle approach understand which actions DOT can take reduce negative environmental impacts activities. Three representative and/or...

Wetland impact assessments are an integral part of infrastructure projects aimed at protecting the important services wetlands provide for water resources and ecosystems. However, wetland surveys with level accuracy required by federal regulators can be time-consuming costly. Streamlining this process using already available geospatial data classification algorithms to target more detailed mapping efforts may support environmental planning efforts. The objective study was create test a...

Abstract Best management practices ( BMP s) are widely used to mitigate impacts of increased impervious surfaces on stormwater runoff. However, there is limited detailed and up‐to‐date information available the cost designing, constructing, maintaining s over their lifetime. The objective this study analyze recently constructed by Virginia Department Transportation VDOT ) quantify total per pound phosphorus removed annually. A motivating factor for recent changes regulatory guidelines in...

Street sweeping is a routine roadway maintenance activity that functions as nonstructural stormwater best management practice. Further, the road-deposited sediment collected during operations has potential for beneficial reuse in number of different applications but first must be characterized terms its toxicity to ensure it safe do so. This study provides chemical characterization this material regarding heavy metals, polycyclic aromatic hydrocarbons, and oil grease, attempts predict...

Water quality improvement, constituent mass transport mitigation, and the hydraulic performance of vegetated roadsides were evaluated over 16 storm events for two roadside strips along Lorton Road in Fairfax County, Virginia. Automated, flow-weighted sampling practices employed to develop composite samples event mean concentrations representative an entire event. monitored flow rate volume determine performance. Collected analyzed 13 water constituents: total suspended solids, nitrogen,...

The purpose of this study was to investigate how commercial motor vehicle (CMV) drivers' performance with adaptive cruise control (ACC) affected by weather conditions. analyzed 33,000 hours naturalistic data across 78 CMV drivers throughout the United States. It found that set their ACC speed an average 63 m/h, regardless also users one brand allowed system headway for 7.4% time in adverse compared 6.0% non-adverse Finally, mean conditions longer using manual driving both brands ACC....

A large part of the Virginia Department Transportation's (DOT) maintenance effort comprises implementation its anti-icing program. Earlier research confirmed that DOT captures a volume salt-laden storm water runoff at 300-plus salt storage facilities throughout state and disposal options for this are limited costly. Although is implementing recommended management to reduce quantity captured, was undertaken determine possibility recycling salt-contaminated brine production. Laboratory field...

The Virginia Department of Transportation (DOT) is responsible for maintaining more than 57,000 mi roadway; a major part that responsibility implementation DOT's anti-icing program. In FY 2003, the agency purchased 570,000 tons sodium chloride; this salt stored at nearly 300 locations statewide. This study's objectives were to assess quantity and quality salt-contaminated water generated from storm runoff road storage facilities evaluate management treatment alternatives reduce costs better...

Abstract A low concentration chemical treatment has been developed for pumping into a producer from surface to stop water production without harming hydrocarbon production. Matrix reservoirs are the primary target, though upper permeability limit is not yet known. Numerical simulation shown that while such would be universal, many viable targets exist. Horizontal wells and multilaterals can make ideal targets, as vertical in heterogeneous formations hydraulically fractured wells. Key...

The Virginia Department of Transportation (DOT) is responsible for maintaining more than 57,000 mi roadway; a major part that responsibility implementation DOT's anti-icing program. In FY 2003, the agency purchased 570,000 tons sodium chloride; this salt stored at nearly 300 locations statewide. This study's objectives were to assess quantity and quality salt-contaminated water generated from storm runoff road storage facilities evaluate management treatment alternatives reduce costs better...

The wetland mitigation and storm water management provisions in the 1987 Clean Water Act significantly affect transportation agencies. A common requirement of these federal state regulations is use best-management practices (BMPs). Virginia Department Transportation has constructed more than 200 wetlands many BMPs, such as detention basins. potentially cost-effective approach to satisfying requirements mitigated BMPs. multifunctional evaluation two receiving highway runoff presented examine...

Highway culverts may hinder the normal migrations of various trout species in wild streams through increased flow velocity, shallow water depths, turbulence, and perching. This can impede migrational movements, affecting genetic diversity long-term survival some species. Often, proper installation reduce adverse effects on fish while maintaining hydraulic efficiency. study characterized problems with existing to develop guidelines for future use areas high gradient streams. Installation...

Large trucks are estimated to be involved in 20,311 crashes annually as a result of making improper lane changes, turns, and backing maneuvers. Camera/Video Imaging Systems (C/VISs) designed low cost countermeasure these crash types by reducing the blind spots located around large trucks. Their effectiveness, however, depends on whether drivers accept use this technology. This paper investigates drivers’ opinions C/VISs that were measured from 12 who each partook four-month C/VIS technology...

The purpose of this study is to evaluate the use constructed wetlands as a best management practice (BMP) by comparison selected design parameters and pollutant removal efficiencies for three wetland sites. Analysis stormwater samples total suspended solids (TSS), chemical oxygen demand (COD), phosphorus (TP), orthophosphate (OP), zinc (Zn) indicates wide range average ranging from –30 % (export pollutant) greater than 80 (removal with significant variations between sites monitored. Data was...

Ice Ban is the registered trade name of a group agricultural byproducts patented for use as roadway deicing/anti-icing agents. applied primarily in anti-icing operations direct liquid or prewetting agent. Because far more expensive to than traditional chemicals snow removal and ice control, it may be cost-effective only if can reduce equipment corrosion, infrastructure damage, adverse environmental effects while maintaining at least same level service. A study was conducted evaluate...