Photo of David Shearer

David Shearer

Field Operations Specialist


  • Larson Transportation Institute

205 Research Building D


Interest Areas:

materials handling, Driving Surface Aggregate aggregate formulation and placement, trailmix development, Environmentally sensitive maintenance of Dirt and Gravel Roads training.






Established in 1989 by the Pennsylvania Transportation Institute with funding provided by the Federal Transit Administration, the Larson Transportation Institute’s Bus Research and Testing Center tests buses for safety, structural integrity, durability, performance, maintainability, noise, emissions, energy economy, and fuel economy. Based primarily in Altoona, Pennsylvania, the Center also has a facility located at the Larson Transportation Institute Test Track in Bellefonte, Pennsylvania.  

Bus Research and Testing Center

2237 Plank Road

Duncansville, PA 16635

Phone: 814-695-3404

Fax: 814-695-4069