Journal of Transportation and Statistics

NOTES: The views presented in the articles in this journal are those of the authors and not necessarily the views of the Bureau of Transportation Statistics. All material contained in this journal is in the public domain and may be used and reprinted without special permission; citation as to sources is required.
The Journal of Transportation and Statistics has been discontinued by BTS because of budget constraints. Papers are therefore no longer being accepted or considered for publication. BTS hopes to bring the Journal back as a virtual publication in the future, and will post any news about the status of JTS on this page.
Table of Contents  File Formats  

Entire Report 
PDF (2.26MB) 

Editorial Board 
HTML (3KB) 

Contributors 
HTML (3KB) 

Front Matter 
HTML (3KB) 

Letter from the EditorinChief 
HTML (4KB) 

Paper 1  Unregistration Rates for OnRoad Vehicles in California by Theodore Younglove, Carrie Malcolm, Thomas D. Durbin, Matthew R. Smith, Alberto Ayala, and Sandee Kidd 
HTML (38KB) 

Table 1  Registration Rates by County 
HTML (21KB) 
Excel (20KB) 
CSV (2KB) 

Table 2  CrossTabulation of Registration Status with the 2001 DMV Database 
HTML (5KB) 
Excel (14KB) 
CSV (1KB) 

Table 3  CrossTabulation of BAR Smog Check Test Results with Registration Status 
HTML (9KB) 
Excel (17KB) 
CSV (1KB) 

Figure 1  Percentage of Unregistered Vehicles in Large and All Counties 
HTML (1KB) 
Excel (16KB) 
CSV (1KB) 

Figure 2  Model Year of All Observed Vehicles 
HTML (1KB) 
Excel (17KB) 
CSV (1KB) 

Figure 3  Model Year of All Unregistered Vehicles for Less than 3 Months 
HTML (1KB) 
Excel (14KB) 
CSV (1KB) 

Figure 4  Percentage of Total Vehicles, by Model Year that are Unregistered for More than 3 Months 
HTML (1KB) 
Excel (14KB) 
CSV (1KB) 

Paper 2  A Bayesian Network Model of TwoCar Accidents by Marjan Simoncic 
HTML (49KB) 

Table 1  Data on TwoCar Accidents in Slovenia: 1998 
HTML (16KB) 
Excel (20KB) 
CSV (2KB) 

Table 2  Inference Results: Evidence for Accident Type 
HTML (4KB) 
Excel (16KB) 
CSV (1KB) 

Table 3  Inference Results: Evidence for Intoxication Variables 
HTML (3KB) 
Excel (14KB) 
CSV (1KB) 

Table 4  Inference Results: Evidence for Some Exogenous Variables 
HTML (2KB) 
Excel (14KB) 
CSV (1KB) 

Figure 1  Example of a Bayesian Network 
HTML (1KB) 

Figure 2  The Network Structure 
HTML (1KB) 

Figure 3  Estimated Unconditional Probabilities of the Bayesian Network 
HTML (1KB) 

Paper 3  Development of Prediction Models for Motorcycle Crashes at Signalized Intersections on Urban Roads in Malaysia by S. Harnen, R. S. Radin Umar, S. V. Wong, and W. I. Wan Hashim 
HTML (42KB) 

Table 1  Description, Factor Levels, Coding System, and Basic Statistics of the Explanatory Variables 
HTML (17KB) 
Excel (19KB) 
CSV (2KB) 

Table 2  Univariate Analysis of Model 1 
HTML (15KB) 
Excel (19KB) 
CSV (1KB) 

Table 3  Multivariate Analysis of Model 1 
HTML (9KB) 
Excel (15KB) 
CSV (1KB) 

Table 4  Multivariate Analysis of Model 2 
HTML (4KB) 
Excel (14KB) 
CSV (1KB) 

Figure 1  Motorcycle Crashes in Malaysia: 2000 
HTML (1KB) 
Excel (15KB) 
CSV (1KB) 

Figure 2  Motorcycle Rider Casualties Compared with Casualties for Occupants in Other Types of Vehicles: 2000 
HTML (2KB) 
Excel (15KB) 
CSV (1KB) 

Figure 3  Typical Layout of Intersection Geometry 
HTML (1KB) 

Figure 4  Actual and Modeled Motorcycle Crashes: 19972000 (Model 1) 
HTML (1KB) 
Excel (18KB) 
CSV (1KB) 

Figure 5  Effects of Traffic Flow on Motorcycle Crashes: Model 1 
HTML (1KB) 
Excel (16KB) 
CSV (1KB) 

Figure 6  Relationship of Major and MinorRoad Flows with Differing Shoulder Widths (based on Model 2) 
HTML (1KB) 
Excel (15KB) 
CSV (2KB) 

Paper 4  Effects of Extreme Values on Price Indexes: The Case of the Air Travel Price Index by Janice Lent 
HTML (60KB) 

Table 1  Limits and Orders of Magnitude for the Unweighted Mean Factors 
HTML (3KB) 
Excel (16KB) 
CSV (1KB) 

Figure 1  All Classes of Service: Quarterly Chained Preliminary Series 
HTML (1KB) 
Excel (17KB) 
CSV (1KB) 

Figure 2  Restricted Coach Class: Quarterly Chained Preliminary Series 
HTML (1KB) 
Excel (15KB) 
CSV (1KB) 

Figure 3  Unrestricted First Class: Quarterly Chained Preliminary Series 
HTML (1KB) 
Excel (15KB) 
CSV (1KB) 

Figure 4  Restricted First Class: Quarterly Chained Preliminary Series 
HTML (1KB) 
Excel (15KB) 
CSV (1KB) 

Figure 5  Unrestriced Business Class: Quarterly Chained Preliminary Series 
HTML (1KB) 
Excel (15KB) 
CSV (1KB) 

Figure 6  Restricted Business Class: Quarterly Chained Preliminary Series 
HTML (1KB) 
Excel (15KB) 
CSV (1KB) 

Table A1  Values of Fisher and Törnqvist Indexes with a Single Outlier τ = 1 μ = 1 
HTML (7KB) 
Excel (15KB) 
CSV (1KB) 

Table A2  Values of Fisher and Törnqvist Indexes with a Single Outlier τ = 0 μ = 1 
HTML (8KB) 
Excel (16KB) 
CSV (1KB) 

Table A3  Unweighted Percentiles of the Unit Value Subindex Distributions for the Airfare Index Application 
HTML (9KB) 
Excel (18KB) 
CSV (1KB) 

Paper 5  Estimating Link Travel Time Correlation: An Application of Bayesian Smoothing Splines by Byron J. Gajewski and Laurence R. Rilett 
HTML (60KB) 

Table 1  Logarithm of Travel Time for Link 1 v. Time of Day 
HTML (9KB) 
Excel (17KB) 
CSV (1KB) 

Figure 1  Logarithm of Travel Time for Link 1 v. Time of Day 
HTML (1KB) 
Excel (17KB) 
CSV (1KB) 

Figure 2  Log Travel Time v. Time of Day for Links 1 and 2 
HTML (1KB) 
Excel (29KB) 
CSV (11KB) 

Figure 3  Example Problem with Static Travel Time 
HTML (1KB) 
Excel (28KB) 
CSV (5KB) 

Figure 4  Illustration of Covariance Function and Correlation for a Moderately Congested TwoLink Example: Day 10 
HTML (1KB) 
Excel (70KB) 
CSV (20KB) 

Figure 5  Illustration of Covariance Function and Correlation for a Very Congested TwoLink Example: Day 7 
HTML (1KB) 
Excel (39KB) 
CSV (10KB) 

Figure 6  Illustration of Covariance Function and Correlation for a LessCongested TwoLink Example: Day 20 
HTML (1KB) 
Excel (68KB) 
CSV (19KB) 

Figure 7  90% Bayes Credible Regions for the Correlation for 20 Days 
HTML (1KB) 
Excel (25KB) 
CSV (3KB) 

Figure 8  Correlation Coefficient for Links 1 and 2 as a Function of the Tuning Parameter 
HTML (1KB) 
Excel (14KB) 
CSV (1KB) 

Paper 6  Speeds of Rural Interstate Highways Relative to Posting the 40 mph Minimum Speed Limit by Victor Muchuruza and Renatus N. Musa 
HTML (43KB) 

Table 1  Description of the Study Sites 
HTML (6KB) 
Excel (16KB) 
CSV (1KB) 

Table 2  Results of the Volume Analysis 
HTML (29KB) 
Excel (23KB) 
CSV (2KB) 

Table 3  Mean Speed Characteristics 
HTML (26KB) 
Excel (21KB) 
CSV (2KB) 

Table 4  Percentile and Pace Speed Characteristics 
HTML (22KB) 
Excel (21KB) 
CSV (2KB) 

Table 5  Comparison of BeforeandAfter Speed Data 
HTML (17KB) 
Excel (30KB) 
CSV (3KB) 

Figure 1  Hourly Variations of Average Lane Means Speeds 
HTML (3KB) 
Excel (26KB) 
CSV (4KB) 

Figure 2  Analysis of Vehicles Traveling at Speeds Below 60 mph 
HTML (2KB) 
Excel (17KB) 
CSV (1KB) 

Book Reviews 
HTML (24KB) 

Data Review 
HTML (10KB) 

Table 1  Top 50 U.S. Freight Gateways, Ranked by Value of Shipments: 2003 
HTML (35KB) 
Excel (25KB) 
CSV (4KB) 

Call for Papers 
HTML (2KB) 

Call for Papers  Special Issue on Transportation Investment 
HTML (3KB) 

Guidelines for Manuscript Submission 
HTML (5KB) 

Reviewers for 2004 
HTML (7KB) 

Index for Volume 7 
HTML (12KB) 

Back Cover 
HTML (2KB) 