Jim Marr has applied his expertise and continuing research in videography, photography, visualization, video analysis, photogrammetry, and lighting and visibility to investigate and analyze numerous vehicular accidents involving passenger cars, heavy trucks, motorcycles, bicycles and pedestrians.
Mr. Marr’s extensive research in visibility studies in different lighting and weather conditions has put him at the forefront of this area of expertise.
In other works, Mr. Marr has produced visualization and 3D models for several other industries, including shooting incidents, real estate development, coal gasification companies, and vehicular and pedestrian accidents.
Featured Publications:
Society of Automotive Engineers (SAE)
- “Nighttime Visibility in Varying Moonlight Conditions,” SAE, 2019
- “Nighttime Videographic Projection Mapping to Generate Photo-Realistic Simulation Environments,” #2016-01-0415, SAE
- “Evaluation of Photometric Data Files for Use in Headlamp Light Distribution,” #2010-01-0292, SAE
- “3D Video Projection Mapping Photogrammetry of Physical Evidence Through Video Tracking.” #2013-01-0788, SAE
- Pedestrian visibility testing, San Mateo, CA, March 30, 2010
- Vehicle headlamp visibility, San Mateo, CA, March 30, 2010
- Nighttime motorcycle headlamp study, California, July 12, 2010
- Dynamic motorcycle swerve and obstacle avoidance testing, California, July 12, 2010
- Conspicuity tape visibility testing, Morrison, CO, July 31, 2014
- Pedestrian Visibility Study, San Francisco, CA, June 2, 2015
- Vehicle headlamp testing, Morrison, CO, August 27, 2015
- Emergency light conspicuity testing, Morrison, CO, September 22, 2015
- Vehicle visibility testing, Greenfield, IN, September 30, 2009
- Vehicle visibility testing, , Guadalupe County, NM, July 18, 2011
- Sun Glare visibility testing, Guadalupe County, NM, July 18, 2011
- Live vehicle testing, Redding CA, November 30, 2011
- Bicycle visibility testing, Aurora, CO, March 11, 2015
- Caution light conspicuity testing, Aurora, CO, March 11, 2015
- Sunset rain testing, Greenwood Village, CO, July 11, 2011
- Sun glare visibility testing, Guadalupe County, NM, July 18, 2011
- Sunlight illuminance testing, Alameda, CA, December 21, 2011
- Sun glare testing, Redwood City, CA, January 18, 2011
- Nighttime snow testing, Greenwood Village, CO, October 24, 2010
- Daytime rain testing, Greenwood Village, CO, May 11, 2011
- Nighttime rain testing, Lafayette, CO, June 12, 2011
- Sun glare visibility testing, Guadalupe County, NM, July 18, 2011
- Sunlight illuminance testing, Alameda, CA, December 21, 2011
- Fog testing, Redwood City, CA, January 18, 2011
- Daytime snow testing, Greenwood Village, CO, January 11, 2011
- Daytime snow testing, Greenwood Village, CO, February 25, 2015
Specialized Visibility Testing:
Daytime Visibility Testing:
Visibility Lighting Testing:
Visibility Weather Conditions Testing:
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