NEXUS Intersections


NEXUS takes the intersection design process a step further by incorporating vehicles, capacity conditions, sight distance analysis, conflict point evaluation, and 3D grading analysis into the drawing. In addition, the extensive editing functions make design refinements quick and easy. What used to take hours or days can be done in a fraction of the time with NEXUS.

See how all the new features in the latest NEXUS release compare for designing roadway intersections much faster than conventional methods. 

Compare Versions
Intersection Geometric Design 2.0 1.0
Use the patented Vehicle Envelope Method to generate intersection geometry
Ability to define complex corner geometry with design vehicle movement
Choose from three corner geometry types: Arc, Biarc, Triarc
Define corner island envelope including slip lane width, entry and exit offset
Define bay taper ratio and auxiliary taper type
Add bike lines with Bicycle Lane Symbol schematic pavement markings
Dynamically generate and update Autodesk® AutoCAD® Civil 3D® horizontal alignments, vertical profiles, and top surfaces
Design Corner Geometry includes the ability to reference the AASHTO 2004/2010 Tables for the different corner geometry types
Ability to control the taper and offset of a median island at the approach ends
 Design Guidelines includes new categories to define default settings for automatic creation of corner and median islands  
Intersection Layout Tools 2.0 1.0
Dynamically generate intersections using any or a combination of the four different methods: Lane Configuration; Capacity Conditions; Leg Templates; Intersection Templates
Create intersection layouts with schematic pavement markings and edges, traffic direction arrows, control radii, corner geometry, and island envelopes
Specify the median island envelope and divisional island envelope width
Addition of over 450 different roadway intersection leg templates
Use previously designed and saved intersection layouts as templates for future projects
Intersection Grading Features 2.0 1.0
Create 3D grading models of an intersection with vertical profiles designed to each alignment
View a graphical display of the intersection’s vertical profile with adjustable ranges  
 Draw basic contour lines based on the contour intervals for evaluating drainage patterns  
 Dynamically generate Autodesk® AutoCAD® Civil 3D® horizontal alignments, vertical profiles, and top surfaces from the NEXUS grading model  
 Autodesk® AutoCAD® Civil 3D® surfaces, corridors ,and assemblies can be dynamically updated using the NEXUS grading model  
Intersection Analysis Tools 2.0 1.0
Check sight lines on opposing left turns on major streets to ensure adequate sight distances
Use design values for: Perception-Brake Time; Deceleration; Acceleration due to Gravity; Approach Speeds
Determine the number of conflict points from vehicle paths that cross, merge, or diverge
Draw: Conflict Points; Tally of Crossing Points; Merge Points; Diverge Points; and Total Points
Import HCS (Highway Capacity Software) file data for signalized and unsignalized intersections to initialize geometric design and traffic flow  
Update intersection from capacity conditions for signalized or unsignalized intersections using parameters for number of entry lanes and exit lanes, storage length, crossing parameter
Editing and Reporting Features 2.0 1.0
Edit configurations by adding or deleting lanes, lane directions, and medians
Control road widening elements including: functional area length and end offset; approach taper and start; departure taper and start
Generate  a summary report with all relative intersection design infomation
Create a table with data on capacity conditions and the intersections summary report side by side to compare requirements