Evaluate Visibility at a RR Grade Crossing

This program is an interactive demonstration tool that presents a collection of possible scenarios for a particular grade crossing accident.  Its purpose is to allow the user to interactively explore the complex position and speed relationships between vehicle, train, and visual conditions at the crossing.

The Grade Crossing Calculator allows the user to set the vehicle's approach speed and to change the position of the vehicle along its path, and to see the corresponding view from the vehicle driver's position.


Click the 'Next' button to see instructions.