In 2015 Philadelphia Toboggan Coasters, Inc. commissioned Robert A. DiDomizio, Jr. P.E to complete a study on the Patron Clearance Envelope. The Study of the Patron Clearance Envelope for Roller Coaster Trains written by Robert A. DiDomizio, Jr. P.E. was originally published in May of 2015 by Philadelphia Toboggan Coasters, Inc.’s President and CEO, Thomas D. Rebbie.

PTCI also published this copyrighted study here on our website on March 10, 2016 where it was available to be viewed by the public. PTCI has decided to repost the copyrighted study pertaining to the Parton Clearance Envelope to once again help educate the public.


Patron Clearance Envelope