North Carolina Justice Academy

North Carolina Department of Justice

At Scene Traffic Crash Investigation

Please check our "Available Training" page for the most current status of the course. 

Who Should Attend:

Law enforcement officers with traffic crash investigation responsibilities. NCJA Introduction to Traffic Crash Investigation is a prerequisite and must be successfully completed prior to attending NCJA At-Scene Traffic Crash Investigation.

Course Goal:

To enable the participants to determine minimum speed of vehicles involved in a crash based on physical evidence documented at the scene.

Course Objectives:

The student will be able to:

Perform a variety of mathematical computations to:
- Determine minimum vehicle speed based on physical evidence.

- Determine Time/Distance traveled.
- Solve Linear Equations.
- Perform Unit Analysis.
- Account for variations in perception/reaction times.

- Account for braking deficiencies when calculating speed.
- Determine the coefficient of friction for various surfaces.


The course employs demonstration, lecture and practical exercises.

Course Requirements:

Attendance is required at all class sessions. Satisfactory completion of practical exercises conducted throughout the course must be accomplished. A minimum score of 75% must be attained on the final exam.
Special Concerns:
Class will begin at 8:30 a.m. on the first day.  Students should bring a scientific calculator TI-30 capable of trigonometric functions. Students should plan to spend some time at night to complete practical exercises and study assignments. 


Register for ALL NCJA classes (online, traditional and web-based) on our North Carolina Justice Academy Training Portal. After signing in to the portal, you can view ALL available classes. If you don’t have a portal account, instructions for creating one are located here.



Course Coordinator:

Terry D. Miller


Length of Course:

Five days - 40 hours

TEICP Accredited Courses



The correct sequence for completing the traffic crash investigation courses should be:

• Introduction to Traffic Crash Investigation (40 hours)

• At-Scene Traffic Crash Investigation (40 hours)

• Advanced Traffic Crash Investigation (80 hours)

• Traffic Crash Reconstruction (80 hours)