Spring 2013 (Vol. 52, No. 1)
Modeling Fatigue-Induced Collision Relative Risk: Implications of Service Hours and Fatigue Management Policies on Transit Bus Operators in Florida Abstract This research explores the association between fatigue-induced crash risk, transit operator hours of service and fatigue management policies in the state of Florida. Data used in this study include incident data archived by transit agencies and bus […]
Spring 2013 (Vol. 52, No. 1)
Efficiency Benchmarking of North American Airports: Comparative Results of Productivity Index, Data Envelopment Analysis and Stochastic Frontier Analysis Abstract Using three common methodologies for measuring airport efficiency, namely the productivity index method, Data Envelopment Analysis (DEA) method, and stochastic frontier analysis (SFA) method, this study examines the efficiency performances of 62 Canadian and U.S. airports. Unlike most previous […]
Spring 2013 (Vol. 52, No. 1)
An Analysis of a Strategic Transformation Plan: The Case of Alaska Airlines Abstract In 2003, amid the turmoil of the U.S. airline industry in the post-9/11 environment, the senior management of the Alaska Air Group announced a “strategic vision” entitled “Alaska 2010.” The pronouncement articulated positions with regard to cost leadership, product differentiation, and growth. This study empirically […]
Spring 2013 (Vol. 52, No. 1)
Modeling Injury Severity of Young Drivers Using Highway Crash Data from Kansas Abstract Young drivers have higher motor vehicle crash rates compared to other drivers, and understanding the reasons for this would help to improve safety. This study, therefore, investigated characteristics and contributory causes of young-driver crashes and developed multinomial logit models to identify severity affecting factors. It […]
Fall 2012 (Vol. 51, No. 3)
Stopping Behavior of Drivers at Stop-Controlled Intersections: Compositional and Contextual Analysis Abstract This research examines how drivers conduct themselves at stop signs by looking at the effect of different compositional variables (socio-demographic attributes) and ecological variables (physical attributes that affect people’s behavior) on drivers’ decisions to make a complete stop, as required by law. Observational study was designed […]
Fall 2012 (Vol. 51, No. 3)
Productivity Improvements in the U.S. Rail Freight Industry, 1980-2010 Abstract Between 1980 and 2008, extensive productivity improvements and changes in traffic mix allowed railroads to become more profitable despite declining prices and stronger competition from motor carriers. These productivity improvements enabled the Class I railroads to halve their real costs per ton-mile, even though costs for fuel and […]
Fall 2012 (Vol. 51, No. 3)
Pavement Pre- and Post-Treatment Performance Models Using LTPP Data Abstract This paper determines that pavement performance in International Roughness Index (IRI) is affected by exogenous interventions such as pavement age, precipitation level, freeze-thaw level, and lower level preservation maintenance strategies. An exponential function of pavement age was used to represent pavement IRI performance curves. Moreover, this paper demonstrates […]
Fall 2012 (Vol. 51, No. 3)
A Dynamic Programming Optimization Approach for Budget Allocation to Early Right-of-Way Acquisitions Abstract Construction of bypass lanes at rural intersections has typically been considered a low-cost highway safety improvement by the transportation community. However, this needs to be quantitatively evaluated so that the decisions could be made on whether to continue with adding bypass lanes. Highway safety analyses […]
Fall 2012 (Vol. 51, No. 3)
Predicting Block Time: An Application of Quantile Regression Abstract Airlines face three types of delay that make it difficult to build robust schedules and to support block time predictability. Block time is the time elapsed from gate departure to gate arrival and refers to the time when blocks are off the wheels at the departure airport to […]
Fall 2012 (Vol. 51, No. 3)
Applying the Highway Safety Manual to Two-Lane Road Curves Abstract This paper evaluates the Highway Safety Manual (HSM) crash prediction model using data on twolane rural horizontal curves in North Carolina. An analysis of the local conditions calibration factor for the HSM predictive model in North Carolina found that a large number of sites (approximately 300) are required […]
