REC-TEC Menu (Dropdown) – Underline indicates Hyperlink

Module number calls Overview – Module name calls F1 Help file

 

 

                                               

 

 

 

                                                           

 

 

                                                                       

                                                 

           

 

 

 

 

 

 

 

 

 

Module 1:  Time - Distance – Acceleration-Deceleration (Rate/Factor)

 

Overview:  This module computes Acceleration/Deceleration factors and rates based on supplied information.

 

Module 2:  Time - Distance – Acceleration Single Surface

 

Overview:  This module computes detailed information on the Speed, Distance and Time of a single acceleration event.

 

Module 3:  Time - Distance – Deceleration Single Surface

 

Overview:  This module computes detailed information on the Speed, Distance and Time of a single deceleration event. If lateral information is input, the module also computes detailed swerve and swerve-and-return data.

 

Module 4:  Time - Distance – Multiple Vehicle

 

Overview:  This module computes comparative data for two vehicles in two individual acceleration, deceleration or constant velocity events and offers animation of the maneuver.

 

Module 5:  Time - Distance – Multiple Events

 

Overview:  This module computes the intermediate and final speed, distance and time data for multiple (99) acceleration, deceleration, or constant velocity events.

 

Module 6:  Time - Distance – Multiple Surfaces

 

Overview:  This module computes the intermediate speed, final speed, distance and time data over multiple surfaces in an acceleration, deceleration or at constant velocity.

 

Module 7:  Time - Distance – Time - Distance (Acc~Dec)

 

Overview:  This module computes detailed information on the Speed, Distance and Time of an Acceleration-Transition-Deceleration event.

 

Module 8:  Time - Distance – Time - Distance – Omni

 

Overview:  This module computes Acceleration/Deceleration factors and rates, Time, Distance, and/or Speed as appropriate based on supplied information. It will create a table of user-developed research data (pedestrian/vehicle study) for speed, time, distance and/or acceleration/deceleration rates, which automatically integrates into the Statistical Range (Monte Carlo) module in REC-TEC allowing additional analysis (mean, range, variance, upper and lower bounds).

 

This very powerful module does all of the basic computations of the Acceleration/Deceleration Factor, Acceleration Single Surface and Deceleration Single Surface modules of the program in a single module.  It provides Graphics, Animation, Iteration and Finite Difference Analysis.  It does not provide for Lateral Distance (Swerve / Lane Change) computations, Grade and Braking adjustments.

 

Module 9:  Collision Avoidance – Braking Maneuvers

 

Overview:  This module computes speed, time and distance required to either stop before striking target vehicle, or decelerate enough to allow crossing target vehicle to escape.

 

Module 10:  Collision Avoidance – Collision Analysis

 

Overview:  This module computes the speeds, times and distances during which the vehicles are exposed contact and during which contact will actually occur.

 

Module 11:  Collision Avoidance – Following Maneuvers

 

Overview:  This module computes the speed, time and distance at which a maximum rate deceleration or an evasive maneuver must begin in order to match the speed of the (accelerating, decelerating or constant-velocity) lead vehicle, thus preventing a collision.

 

Module 12:  Collision Avoidance – Passing Maneuvers

 

Overview:  This module computes the Time and Distance required to complete a passing maneuver based.

 

Module 13:  Collision Avoidance – Turning Maneuvers

 

Overview:  This module computes data on Turn and Lane Change maneuvers, including braking during the turn, and compares different common formulae used in accident reconstruction.

 

Module 14:  Fall - Vault – Airborne

 

Overview:  This module computes the Fall/Vault Speed (along with ancillary information) for specific input data regarding the horizontal and vertical change in the center of gravity of a vehicle (object).

 

Module 15:  Fall - Vault – Pedestrian (Common Formulae)

 

Overview:  This module computes the Vault Speed for Pedestrians using common formulae.

 

Module 16:  Fall - Vault – Vault/Slide Integration (Ped/Bike/MC)

 

Overview:  This module computes the Pedestrian Vault and Slide information including detailed vault data for a given Throw distance, vertical change of CG, friction value and known or optimum launch angle.

 

Module 17:  Yaw – Critical Speed – Critical Speed of Curve – Yaw

 

Overview:  This module computes the Yaw - Critical Speed of Curve from Friction and Chord / Middle Ordinate or Radius information.

 

Module 18:  Time - Distance – Motion Analysis

 

Overview:  This module computes speed dissipation from wheel forces due to position. It can be used for spins, yaws or decelerations.  This module can be used for either a Critical Speed Maneuver or a Spin. Analysis is by position (Work-Energy computation).

 

Module 19:  Yaw - Critical Speed – Motorcycle Lean Angle

 

Overview:  This module computes the Radius, Speed, Lean Angle and/or Friction Factor for (2-wheeled) motorcycles or bicycles in a turn.

 

Module 20:  Energy – Conservation of Energy

 

Overview:  This module computes for unknowns in the collision using Conservation of Energy.

 

Module 21:  Energy – Kinetic

 

Overview:  This module computes the unknowns in the basic Kinetic Energy formulae for complex events and displays both the energy and momentum of the object.

 

Module 22:  Energy – Break Fracture

 

Overview:  This module computes Energy to break a wooden pole (power pole, utility pole) based on its circumference.

 

Module 23:  Momentum – 360 Digital Momentum

 

Overview:  This module computes the Impact Speeds, Angles and DeltaVs for angular and inline collisions using a Drag and Drop interface with digital inputs available on an interactive graphical interface. This module interface effectively marries output from the CrushV module and Motion Analysis modules using a graphics display to consolidate information on position and damage analysis verifying the linear momentum solution. It then takes the finalized data and transfers it to the 360 Linear Momentum module for further technical and statistical analysis.

 

Module 24:  Momentum – 360 Linear Momentum

 

Overview:  This module computes the Impact Speeds, DeltaVs, PDOFs, Energy and Momentum data for angular and inline collisions.

 

Module 25:  Momentum – 360 LM-PDOF Lite (V1 and/or V2)

 

Overview:  This module computes the Impact Speed, DeltaV and PDOF data for angular collisions.

 

Module 26:  Momentum – Angular Momentum

 

Overview:  This module computes the speed of a striking vehicle using pre- and post-impact data in conjunction with inertial and rotational information.

 

Module 27:  Momentum – Low Speed Collisions

 

Overview:  This module computes the Closure Speed and DeltaV data in Low Speed Collisions.

 

Module 28:  Momentum – Vector Momentum Analysis

 

Overview:  This module computes post-impact information based on input pre-impact information (Linear Momentum in reverse).

 

Module 29:  CRUSHV and CRASH3 – CRUSHV (DeltaV from Damage) and CRASH3

 

Overview:  This module uses enhanced Crash3 Damage Analysis algorithms to compute collision data including Delta V (change of velocity) for the collision.

 

Module 30:  CRUSHV and CRASH3 – Crush Lite

 

Overview:  This module computes “Kinetic Energy Equivalent Speed” or “Closing Speed” of collision using the Vomhof (4N6XPRT SYSTEMS) methodology employing “Crush Factors.”

 

Module 31:  CRUSHV and CRASH3 – Reduced Mass (CEES)

 

Overview:  This module computes the “Reduced Mass” of vehicles in collision and the maximum and actual Energy available for Damage and relative Translational Motion. It also computes the Crush Energy Equivalent Speed (CEES) for the collision.

 

Module 32:  CRUSHV and CRASH3 – Stiffness Coefficients

 

Overview:  This module computes A, B, and G Stiffness values using data obtained from car-barrier or car-impactor collisions.

 

Module 33:  Miscellaneous – Rotation Factor

 

Overview:  This module computes an approximate deceleration adjustment factor for a vehicle in rotation.

 

Module 34:  Miscellaneous – Speed - Hydroplane

 

Overview:  This module computes the speed at which a tire will hydroplane using published formula under various (input) conditions.

 

Module 35:  Miscellaneous – Speed - RPM

 

Overview:  This module computes the Speed of a vehicle or bicycle based on engine speed and two gear ratios.

 

Module 36:  Miscellaneous – Tangent Offset

 

Overview:  This module computes Tangent Offset information.

 

Module 37:  Miscellaneous – Weight Shift (3-Axis)

 

Overview:  This module computes Passenger Vehicle, Straight Truck, Bus or other non-articulated Vehicles three-axis center of gravity based on information about vehicle and weights on the wheels when level and then raised. This module will also compute rollover speeds and critical speed of curve data.

 

Module 38:  Railroad Grade Crossings – AASHTO/AREA Vertical Alignment

 

Overview:  This module computes compliance of on-grade crossings with the requirements of AASHTO/AREA standards.

 

Module 39:  Railroad Grade Crossings – AASHTO Sight Triangle

 

Overview:  This module computes the required Sight Triangle values at on-grade railroad crossings.

 

Module 40:  Railroad Grade Crossings – Electronic Rail Circuits

 

Overview:  This module displays graphically the operation of Electronic Rail Circuits.

 

Module 41:  Combined Speed Formula

 

Overview:  This module uses the formula Sqr (a^2 + b^2 + c^2…) to combine the entries.  It can be used for speeds, solving for the hypotenuse of a right triangle, or any other numbers that must be combined in this manner.

 

Module 42:  Conversions

 

Overview:  This module does most of the conversions used in AR.

 

Module 43:  Quadratic Solver

 

Overview:  This module computes the real and imaginary roots of a quadratic equation.

 

Module 44:  Triangle Solver

 

Overview:  This module computes detailed information on a Triangle defined by three sides or side/angle information.

 

Module 45:  Statistical Range (Monte Carlo)

 

Overview:  This module provides mathematical justification for the ranging of variables based on a limited number of samples. 

 

Module 46:  Photogrammetry – REC-TEC 2D Photogrammetry

 

Overview:  This module provides two-dimensional numerical rectification of photographic images.

 

Module 47:  Heavy Truck – DISC/S-CAM V Air Brake

 

Overview:  This module computes and simulates the deceleration of S-CAM or Air Disc equipped vehicles based on Initial Speed or Distance and the setup and adjustments of the vehicles braking system. This module compensates for the heat created during the run.

 

Module 48:  Heavy Truck – Load Check A (Tractor - Trailer)

 

Overview:  This module computes Articulated Vehicle axle weights and three-axis center of gravity based on information about vehicle and load (Bill of Lading).

 

Module 49:  Heavy Truck – Load Check B (Straight Truck - Bus)

 

Overview:  This module computes Straight Truck, Bus or other non-articulated Vehicle axle weights and three-axis center of gravity based on information about vehicle and load (Bill of Lading or passenger manifest).

 

Module 50:  Heavy Truck – Maximum Off-Tracking

 

Overview:  This module computes the Maximum Off-Tracking of articulated vehicles.

 

Module 51:  Heavy Truck – Rollover

 

Overview:  This module computes the Rollover Speeds of a vehicle based on vehicle dimensional data.

 

Module 52:  Heavy Truck – Weight & Balance

 

Overview:  This module computes axle weights and center of gravity for Articulated Vehicles based on information about Tractor, Trailer and Load.

 

Module 53:  Time - Distance – Time - Distance (EDM)

 

Overview:  This module computes basic Time and Distance information from data retrieved from Electronic Data Modules (cars and trucks) and formats it for enhanced examination by the Time - Distance Multiple Events module.

 

Module 54:  Time - Distance – V-TRAX

 

Overview:  This module animates up to four vehicles in various acceleration, deceleration or constant velocity scenarios while allowing two of the vehicles to execute turning maneuvers.

 

Module 55:  SMAC-RT

 

Overview:  This version of SMAC is a modification of the 1997 version that Calspan obtained from UMTRI.  In its original form as downloaded from Calspan, it was unusable.  It has been modified slightly to make it functional and to produce the required/desired output files.

 

Module 56:  Energy - Pole / Narrow Object Impact

 

Overview:  Computes information for Pole / Narrow Object Impact using Crush/Crash3, Vomhof, Nystrom & Kost, and Wood methodologies.  

 

Module 57:  Energy – Damage Analysis > Crush (Motorcycle)

 

Overview: Computes Speed from Motorcycle Crush Analysis.   The paper “Motorcycle Crush Analysis” (Help Button) is a reprint of the article by Wade Bartlett, PE appearing in Accident Reconstruction Journal in March/April 2009.  The paper is used with permission of the author and Vic Craig, Editor of the Accident Reconstruction Journal.

 

Module 58:  Vectors (EDR – Momentum)

 

Overview:  Computes the Resultant vector (Length and Angle) from the Longitudinal and Lateral DeltaV vectors downloaded from Event Data Recorders.  With additional inputs it can compute DV1, DV2, V1, V2, V3, and V4.

 

Module 59:  REC-TEC Program Overview

 

Overview:  Overview of the REC-TEC program

 

Module 60:  Animation

 

Overview:  Animation Output Files

 

Module 61:  Finite Difference Analysis

 

Overview:  Computes an “Uncertainty Level” based on a specific range of the variables within a formula.

 

Module 62:  Drive3 Overview

 

Overview:  Overview of the DRIVE3 program

 

Module 63:  Path Intrusion-Front

 

Overview:  Computes the Driver Response Time involving a Path Intrusion from the Front (Approaching)

 

Module 64:  Path Intrusion-Side

 

Overview:  Computes the Driver Response Time involving a Path Intrusion from the Side

 

Module 65:  Vehicle Changing Lanes

 

Overview:  Computes the Driver Response Time involving Vehicle Changing Lanes

 

Module 66:  Vehicle Following

 

Overview:  Computes the Driver Response Time involving the Primary Vehicle following another vehicle

 

Module 67:  Yellow Signal Response

 

Overview:  Computes the probability of stopping and Driver Response Time for given inputs

 

Module 68:  Pedestrian Vaults

 

Overview:  Changing the Reference Frame for computing Pedestrian Vaults