Crash Data Services, LLC
| Providing quality traffic accident investigation and reconstruction |
US Roadways have a wide variety of motor
vehicle traffic. This makes for unique traffic
accident reconstruction scenarios involving,
sometimes, distinctly different vehicles.
The FHWA Traffic Monitoring Guide (TMG)
recommends classifying vehicles into 13
different categories based on vehicle
configuration. Class 13 heavy trucks can have
seven or more axles and gross vehicle weight
ratings (GVWRs) of 33,001 pounds or more.
Small Class 1 motorcycles, can weigh as little
as 400 - 500 pounds. Passenger cars, light
trucks, and SUVs can have GVWRs anywhere
from a few thousand pounds up to 10,000
pounds.
The weight of colliding vehicles is an intricate
part of accident reconstruction. Certain vehicle
attributes, such as momentum, are directly
dependant on weight. Likewise, certain
methodologies of crash reconstruction become
increasingly sensitive as the weights of colliding
vehicles distance themselves.
And, not only do vehicle weights dramatically
affect accident reconstruction, but vehicle
equipment does as well. Anti-lock brake
systems (ABS), stability control, headlamp type,
automotive suspension, wheel base and more
can all influence the dynamic interaction among
vehicles during a collision.
For example, the friction value, sometime
referred to as drag factor, of a sliding or
skidding heavy truck can be significantly less
than the frictional value possessed by a
passenger car sliding or skidding on the same
surface. Our accident reconstruction experts
will provide relevant analysis of those vehicle
characteristics that influenced a crash.
vehicle traffic. This makes for unique traffic
accident reconstruction scenarios involving,
sometimes, distinctly different vehicles.
The FHWA Traffic Monitoring Guide (TMG)
recommends classifying vehicles into 13
different categories based on vehicle
configuration. Class 13 heavy trucks can have
seven or more axles and gross vehicle weight
ratings (GVWRs) of 33,001 pounds or more.
Small Class 1 motorcycles, can weigh as little
as 400 - 500 pounds. Passenger cars, light
trucks, and SUVs can have GVWRs anywhere
from a few thousand pounds up to 10,000
pounds.
The weight of colliding vehicles is an intricate
part of accident reconstruction. Certain vehicle
attributes, such as momentum, are directly
dependant on weight. Likewise, certain
methodologies of crash reconstruction become
increasingly sensitive as the weights of colliding
vehicles distance themselves.
And, not only do vehicle weights dramatically
affect accident reconstruction, but vehicle
equipment does as well. Anti-lock brake
systems (ABS), stability control, headlamp type,
automotive suspension, wheel base and more
can all influence the dynamic interaction among
vehicles during a collision.
For example, the friction value, sometime
referred to as drag factor, of a sliding or
skidding heavy truck can be significantly less
than the frictional value possessed by a
passenger car sliding or skidding on the same
surface. Our accident reconstruction experts
will provide relevant analysis of those vehicle
characteristics that influenced a crash.
| In 2008, NHTSA appropriated almost 759 million dollars for grants promoting traffic safety. - NHTSA |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| Car, Truck, SUV or Motorcycle Traffic Accident Reconstruction Expert |
| Accident reconstruction experts are generally most concerned with dynamic friction. Dynamic friction, also called kinetic or sliding friction, is a measure of the force resisting motion between two sliding bodies. The friction caused between a sliding tire and the underlying road surface is one type of dynamic friction. The proper assessment and application of tire to roadway friction, sometimes referred to as the coefficient of friction, is critical when an expert accident reconstructionist analyzes a collision. Vehicle ABS systems attempt to maximize roadway friction by not allowing a vehicle's wheels to lock. In most cases, peak friction is actually reached just prior to wheel lock-up. To view a graph of an ABS vs Skid test, please click here. |
| The Federal Highway Administration (FHWA) Traffic Monitoring Guide (TMG) recommends classifying vehicles into 13 different categories. All States currently use this classification scheme or some variation of it for classifying vehicles. To read FHWA's TMG, please click here. |
| Because of the wide variety of vehicles on the road today, the Illinois Department of Transportation (IL DOT) tracks fatal accidents by vehicle type. To view Illinois' 2004 - 2008 fatal crash statistics by vehicle type, please click here. |
|
| | Home | Accident Reconstruction | Crash Data Retrieval | Our Experts | Contact Us | FAQ | Case Law | Site Map | Links | |
| Terms and Conditions: The content of this site may not be used, reproduced or copied for any reason. The photos on the website are the property of Crashdataservices.net and may not be used, reproduced or copied for any reason. Do not use, reproduce or copy any of our website for use on your own website (personal or commercial). By using this website, you agree to our terms & conditions and privacy policy. |
| Our experts are always available to fulfill your accident reconstruction needs. |
| 1-847-217-6644 |
| Reach our reconstruction experts by email: |
| Call today for a free consultation: |