• Overview
• Calculations
• Author

## Accident Reconstruction

An accident reconstruction is a scientific approach to solving the questions of how and why an accident occurred. This approach is usually performed by experts trained in the field of traffic accident reconstruction engineering and physics as well as law enforcement personnel that have this specific training.

Optical analysis of headlight projection as a function of angle, target brightness as a function of illuminance/reflectance and the influence of intraocular glare on a viewer’s ability to detect an object within a glare field.

### Energy and Momentum Analysis

##### Newtonian mechanics of motion analyzing time, speed, acceleration and distance relative to bodies in motion.

Determine what speed a vehicle was traveling based on the length of skid marks laid down during braking or sliding.

Determine whether there was sufficient time and distance to stop or swerve to avoid a collision.

Determine whether a particular driver was late in reacting to an obvious hazard.

### Doppler Effect

Train horns are designed to warn motorists that a train is approaching a crossing. But, when first sounded, the actual sound does not arrive at the crossing for perhaps 1.3 seconds, about the same time it takes a person to react. So, they can’t start their reaction until the sound arrives at the crossing.

The Doppler effect may be able to be used to calculate train speed from the audio track of videos shot by witnesses.

### Ballistic Analysis

##### Rules of physics and trajectories can be computed and plotted.

Ballistics models for the trajectories of bullets, rockets and any other objects subject to gravity, air drag and propulsive power.

Various types of projectiles, whether bullets, powered rockets, loose car batteries, human bodies or blood droplets. All follow the same rules of physics and trajectories can be computed and plotted.