Signalization Challenges of Urban circulators. PAUL ZEBELL
CITY OF PORTLAND
Goals
Safety for all modes of travel
Preemption for emergency vehicles
Priority for transit vehicles
Accessibility for disabled users
Reasonable maximum delays for all modes
Maintaining some capacity for private vehicles
Tools IMPROVED CONTROL SOFTWARE
MOVING TRANSIT BOARDING LOCATIONS
CHANGING OPERATING RULES
NON-STANDARD DETECTION SCHEMES
Train’s here
Serve the Bus
Dis
tan
ce
Time
Offset
• Cars travel through without stopping
Progression Speed: Faster for cars
Dis
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Time
Offset
• Signal timing set for 19 mph • bicycle traffic travels through without stopping
Progression Speed: Slower for Bikes
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