Skid resistance is one of the important serviceability indicators related to safety on wet pavements. There is a need to manage skid resistance systematically to maintain the level of safety performance of roadway surfaces. This study focused on the development of a skid resistance deterioration...

AVCEM is an electric and gasoline vehicle energy-use and lifetime-cost model. AVCEM designs a motor vehicle to meet range and performance requirements specified by the modeler, and then calculates the initial retail cost and total private and social lifetime cost of the designed vehicle. It can...

Moisture damage in asphalt pavements is a complex phenomenon affected by a variety of factors, and has not been fully understood, with major knowledge gaps in three areas: major factors contributing to moisture damage in the field, appropriate laboratory test procedures, and the effectiveness of...

The notion persists that battery technology and cost remain as barriers to commercialization of electric-drive passenger vehicles. Within the context of starting a market for plug-in hybrid electric vehicles (PHEVs), we explore two aspects of the purported problem: (1) PHEV performance goals and...

Tire purchasing and disposal impose considerable cost and waste burdens on private vehicle owners and fleet managers. This research investigates tire maintenance management practices and tire-related vehicle technologies that have the potential to relieve some of these burdens. We investigate...

This report examines early users’ experiences with plug-in hybrid vehicles (PHEVs). At the time this study was conducted in winter and spring of 2007, PHEVs were not yet commercialized. Still, Americans were becoming aware of PHEVs and 25 to 30 vehicles converted from hybrid electric...

The purpose of this report is to understand the extent to which each transportation technology could be used to help meet the 80% emissions reduction target. This report focuses on end-use demands in the transportation sector (i.e. which vehicle technologies will be used to meet demand for...

This dissertation examines the rise, present use, and future growth of the electric two-wheeler (E2W, a.k.a. E2W or e-scooter) in China, the world’s most successful electricdrive vehicle. The E2W market has been experiencing tremendous growth with over 30 million now in regular use on...

Continuing its role as a leader in air pollution policymaking, California led the nation by passing the first global warming legislation in the U.S.: the Global Warming Solutions Act or Assembly Bill 32 (AB 32). The legislation requires California to decrease greenhouse gas (GHG) emissions to...

China’s economic expansion is fueling an accelerated demand for private vehicles. While China’s growing motorization is similar to that of other developing nations, the scale of this growth is unprecedented. Personal motorization provides numerous benefits to individuals and...