Term
| At what length is signal coordination usually used? does it required a fixed cycle length? |
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Definition
-typically less than 1/2 mile or 800m apart
-yes it requires a fixed cycle length |
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Term
| What are the different types of signal coordination? |
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Definition
-One-way progression
-Two-way progression
-Network coordination |
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Term
| When is a one-way progression used? |
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Definition
| -typically for one-way street |
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Term
| What are some factors that affect the suitable offsets for One-way Progression? |
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Definition
-Desired platoon speed
-Block length
-Length of queue at coordinated approaches |
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Term
| What happens when the design speed is less than the actual platoon speed? |
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Definition
| It results in a small(poor) greenbands |
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Term
| What are the different alternatives for two-way progression? |
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Definition
-Single alternate set up
-Double alternate set up
-Simultaneous set up (for intersections close together) |
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Term
| What can you do if the intersection is no uniform? |
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Definition
| -May set up multiple combinations of alternatives |
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Term
| What are the advantages of Signal Coordination? |
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Definition
-Reduced (stops, delay, fuel, consumption, air pollutants emissions, vehicle operating costs)
-Built-in speed control
-More efficient use of intersections
-Lower tendency for stopping-related collisions |
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Term
| What are the problems with signal coordination? |
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Definition
-Problems with side frictions that impact platoon speeds
-heavy turn volumes into street
-wide range of traffic speed |
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