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Elvin Aycock

Elvin Aycock

Professional Engineer
(Peachtree Corners, GA)

Atlanta Engineering Services, Inc.

Elvin Aycock, P.E., P.L.S., is president and founder of Atlanta Engineering Services, Inc. in Alpharetta, Georgia. He is licensed as a Professional Engineer in the states of Georgia, Mississippi, Alabama, North Carolina, South Carolina, Louisiana and Florida. He is also a Professional Hydrologist (PH), Professional Land Surveyor, Certified by Accreditation of Traffic Accident Reconstruction (ACTAR Number 1111), Level II Certified Erosion Control, and Registered Environmental Manager.

Mr. Aycock has been investigating and reconstructing vehicle accidents for more than 20 years. In 2001, he became certified by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR). He specializes in Hydroplaning accident cases where water hazards may have caused the accident. Being a Professional Engineer, a Professional Hydrologist and a Traffic Accident Reconstructions enables Mr. Aycock to evaluate all the components of a hydroplaning case. Mr. Aycock directs the firm’s investigative engineering services to the insurance industry and the legal community regarding engineering issues. He is called upon to evaluate matters concerning accident reconstruction, hydroplaning, roadway safety issues, personal injury cases, storm drainage flooding, flood damage, and construction site accident cases.

Mr. Aycock has 40 years of experience as an engineer and hydrologist and 20 years of traffic accident reconstruction experience. Mr. Aycock is an advocate of continuing education. Today’s highly technical environment dictates continuing study to stay abreast of the changes. Mr. Aycock teaches accident reconstruction and hydrology classes.

Elvin Aycock

Professional Engineer
(Peachtree Corners, GA)

Atlanta Engineering Services, Inc.


Accident Reconstruction Fundamentals: A Guide To Understanding Vehicle Collisions
Published Date: Jul 2015
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Accident Reconstruction Fundamentals: A Guide To Understanding Vehicle Collisions

This books has been written for Attorneys, Insurance Adjuster and the engineer that is new to Traffic Accident Reconstruction. It covers the basic fundamental in an easy to understand style. The best way to understand a subject is to work case problems. The material discussed throughout the book uses example cases to demonstrate how speeds are calculated. Chapter 1, Vehicle Skids: Want to know how the engineer calculates the speed of vehicles from skid marks. This chapter starts with simple skids and progresses into more complicated skids with grades and different skid surfaces. What is the difference between coefficient of friction and a drag factor? Also, how do you determine the drag factor for vehicles where one or more wheels did not skid? Chapter 2, Falls, Flips and Vaults: How do you determine the speed of a vehicle that runs off of a roadway embankment? Sometimes a skidding vehicle will flip or even roll. These topics are covered in an easy to understand methodology. Chapter 3, Vehicle Collisions Analysis, Conservation of Momentum: Determining speeds using the Conservation of Momentum is a favorite method to determine speeds. Find out what information is needed and how to calculate speeds using this method. Ever wonder how Newton's Laws apply to reconstruction? Wonder no more. What is the difference between Collinear collisions (in-line collisions) and angled collisions. Each method is explained and examples calculations shown. Chapter 4, Vehicle Collision Analysis: Conservation of Energy: Engineers use the Conservation of Energy when only crush damage of vehicles are available. Roadway evidence starts to deteriorate immediately after an accident but crush damage to vehicles stay. How to measure crush damage for energy calculations is detailed. Where to obtain stiffness coefficients for speed calculations? All explained. Chapter 5, Heavy Truck Crashes: The approach to calculating speeds of truck/tractors and semi-trailers are different from cars and pickup trucks. Even the terminology can be overwhelming. This is explained and illustrated. Heavy trucks have air-brake systems and can be the cause of a truck accident. The method of investigating heavy trucks with air-brake systems is carefully detailed and also, how to determine the brake efficiency of the truck's brake system. Understanding technical material and being able to explain the material to a jury is the key to helping clients win cases. This was the objective in writing this book and it has proven to be very beneficial understand the complex subject of traffic accident reconstruction.