Doctoral Dissertations


“This research examines the safety relationships between safety culture, safety influences, safety climate, and safety outcomes for long-haul truck drivers. The relationships focus on the intersection of the electronic logging device (ELD) technology, regulations, and truck drivers that fall into the lone-worker category. Truck drivers were interviewed to understand their beliefs, attitudes, practices, values, and behavior patterns aligned with the phase in of the ELD system. Large truck crashes during the same time period were analyzed to understand associations. Outcomes included both a safety culture and climate were established for long-haul truck drivers. Both positive and negative safety behaviors were uncovered as a response to the ELD implementation. Crash data aligned with comments from the drivers and showed a sigmoid relationship through ELD phase in. Links between safety culture, safety influences, safety climate, and safety behaviors were established. However, safety behaviors were not connected with safety outcomes”--Abstract, page iv.


Murray, Susan L.
Reynolds Kueny, Clair

Committee Member(s)

Cudney, Elizabeth A.
Gosavi, Abhijit
Elrod, Cassandra C., 1979-
Samaranayake, V. A.


Engineering Management and Systems Engineering

Degree Name

Ph. D. in Engineering Management


The author thanks The Boeing Company who supported his career through the process and partially funded this work.


Missouri University of Science and Technology

Publication Date

Fall 2021

Journal article titles appearing in thesis/dissertation

  • Early outcomes of the ELD system in the trucking industry
  • Establishing links between safety culture, climate, behaviors, and outcomes of long-haul truck drivers


xi, 77 pages

Note about bibliography

Includes bibliographic references.


© 2021 Carlton Ashley Washburn, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Thesis Number

T 11965