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Alternative 4
 Express Bus + Operational Improvements
What’s Included?
Express Bus Service: Express Bus service operates over long distances without stopping, which speeds up longer peak commuter trips. Buses operate in the general purpose lanes with stops only in the Cumberland and Perimeter areas.
Operational Improvements: These modifications improve travel flow and safety, and include:
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Braided ramps: vertically separating off and on ramps (one ramp passes over the other).
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Auxiliary lanes: an extra lane that runs between interchanges and gives drivers more time to merge in or out. The lane is created when an entrance ramp at one interchange meets the highway and drops out at the next interchange as an exit ramp (with an “Exit Only” sign).
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Collector-distributor lanes: one-way lanes that run adjacent to the interstate and provide access to additional exits/off ramps that do not touch the interstate.
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Reconstructing interchanges
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Building new ramps
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Reconfiguring some local roadways
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