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SigTDD browser application for traffic signal coordination

A browser tool for corridor time-distance diagrams and traffic-signal coordination, replacing the desktop workflow with a graphical canvas, grid-based signal input, saved plans, accounts and subscriptions.

The work

Signal data is entered on a grid and drawn on a graphical canvas as a corridor time-distance diagram, so offsets can be adjusted and progression checked; plans are saved to an account.

It carries forward the Windows desktop time-distance diagram application first released in 2004.

SigTDD time-distance diagram of an eight-intersection corridor with signal phase bars, northbound and southbound progression bands, and the corridor timing table.
Time-distance diagram for an eight-signal corridor, both directions of travel.
SigTDD diagram of a ten-signal highway corridor with the northbound green wave band running diagonally through every intersection.
A northbound priority plan: one continuous green band through ten signals.
SigTDD close-up of a six-signal corridor with phase start times on each bar and the phase direction menu open in the timing table.
Edit phase timing and direction directly in the timing table.
Owner
RPEQ Consulting
Role
Product design and development
Scale
Browser application; successor to the 2004 desktop application
Disciplines
Traffic, Software

Technology

  • browser application
  • graphical canvas
  • accounts and subscription

Capability

  • time-distance diagram
  • traffic-signal coordination
  • graphical engineering tool
  • saved plans
  • subscription capability

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