Handbook for the Accident Reconstructionist by M
Handbook
for the Accident Reconstructionist
by M.J. Lofgren
Mr. Lofgren consolidates many of the scientific techniques
used in crash reconstruction and puts them together for you in one reference
manual. He simplifies formulas, where possible, and explains the principles
behind each. He also includes examples and works step-by-step through each
problem.
If your math skills are a bit rusty, Mr. Lofgren includes
a 104-page appendix devoted entirely to a course in refresher mathematics. From
there, he delves into the equations used for determining speed, kinetic energy,
weight shift and other aspects of crash reconstruction. As a bonus, he’ll tell
you which formulas will come under scrutiny in court and which have already been
tested.
Handbook for the Accident Reconstructionist includes the following chapters:
- Geometric Construction
- Minimum Speed from Skidmarks
- Fall Speed
- Derivation of the Vault Formula
- Derivation of the Critical Speed Formula
- Kinetic Energy Equation
- Derivation of the Radius Equation
- Quadratic Equations
- Time-Distance Equations
- Perspective Grid Photography
- Conservation of Linear Momentum
- Weight Shift
- Miscellaneous Formulas
M.J. Lofgren is a consultant to various law enforcement
agencies in several states as well as to insurance companies and law firms that
require crash reconstruction for use in civil litigation. After serving 21 years
with the Minnesota State Patrol, he now conducts seminars in crash investigation
and reconstruction for police officers, judges, attorneys, law enforcement
agencies, insurance companies, major corporations, motor fleet safety
organizations and civic groups. He has investigated over 1,000 vehicle crashes
and has tested vehicles ranging in size from mini-compacts to tractor-trailer
rigs.
Specifications: 318 pages; 8½”x11”; perfect bound; Publisher: IPTM, 3rd Edition (1983)