ABC and Safety: Work Zone Safety Analysis, Investigating Benefits from ABC on Roadway Safety

October 30, 2020 1:00 pm

In this quarterly Research Seminar, Mohammed Hadi, Ph.D., P.E., Professor; and Sajad Mokhtarimousavi, Ph.D. Candidate, present work under the ABC-UTC research project entitled Work Zone Safety Analysis, Investigating Benefits from Accelerated Bridge Construction on Roadway Safety conducted at Florida International University, Miami.

Earn 1-hour Certificate of Attendance

Click to Register

 Description: According to statistics from the American Road & Transportation Builders Association (ARTBA), Florida is among the top three states for work zone fatal crashes with 73, 80, and 76 fatalities from 2015 to 2017, respectively. During this period, work zone crashes accounted for approximately 1.55% of the total crashes (i.e., 2,112,783 crashes), with 9,142 injury crashes. Another important aspect of work zones is worker safety. The worker fatalities in 2017 were 33.3% and 45.45% higher than 2016 and 2015, respectively. The objective of this project was threefold. First, the project investigated the contributing factors that affect the crash severity of work zone crashes associated with worker presence by time-of-day. Second, the project analyzed the variables that have significant impact on crash frequency as a result of work zone presence at bridge locations. Third, the project assessed the costs related to crash occurrence and crash severity due to work zone presence at bridge locations and quantified the contribution of ABC implementation to traffic safety compared with conventional construction. The outputs of this study provide insight to traffic safety experts for work zone crash analysis as well as to decision makers for more efficient bridge construction implementation.




Mohammed Hadi, Ph.D., P.E.
Department of Civil and Environmental Engineering
Florida International University


Sajad Mokhtarimousavi
(Ph.D., December 2020)
Department of Civil and Environmental Engineering
Florida International University

Presentation Graphics:

Figure 1. Work zone crash statistics in Florida


Figure 2. Work zone crash type pattern over 24 hours



Figure 3. Methodological flowchart for work zone crash analysis


Figure 4. Bridge exposure variables


Question & Answer Period: Submit your questions when you register for the seminar and also in the question box during the seminar. (15 minutes)

Certificate of Attendance: Each site registered for this seminar will receive an email for your response. Just click the first link in the email to obtain a certificate. For multiple participants at a site, the point-of-contact registrant for that site also clicks the second link in the email, logs in, and clicks “Attendees” to provide first name, last name, and email address for each participant at that site; each participant will then receive an automatic email with link to print an individual certificate. Accessing the second link in the email will also allow participants to print certificates for past seminars that were attended by simply clicking the seminar title. Please let Dr. David Garber at FIU know if you have questions or need assistance with receiving your certificate. David’s email address is

For more information: Please contact us by sending an email to