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| Re: Atlantic Avenue speed limit lower to 25 mph (292470) | |||
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Re: Atlantic Avenue speed limit lower to 25 mph |
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Posted by Stephen Bauman on Fri Apr 18 12:26:00 2014, in response to Re: Atlantic Avenue speed limit lower to 25 mph, posted by BrooklynBus on Thu Apr 17 11:31:08 2014. Let me understand what you said about braking.The ITE/FHWA yellow interval standard is set to the reaction time plus half the braking time (at moderate rate). After processing the green to yellow change, the driver has the option to decide whether he is should stop or has enough time to clear the intersection. This depends on where he is relative to the stop line at the signal changes. If the driver is closer to the stop line than the braking distance and proceeds at the yellow change interval design speed, then the driver will cross the stop line before the yellow signal changes to red. People in Brooklyn regularly travel across the entire borough on local streets or a distance of up to 11 miles because we have such few highways. Not that many do. 93% of all unlinked car trips within NYC that start or end in Brooklyn are less than 11 miles. 73% are less than 5 miles. 51% are under 2 miles. If we include only those trips that start and end in Brooklyn, such trips longer than 11 miles drops to under 1%. The average speed within each percentile increases with distance. This suggests that most Brooklyn drivers do take highways for longer trips. |
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