[Summit] unwarranted stop signs

[amasri1 at cox.net]

The interesting thing about this intersection is, before when it was a two-way stop sign, 5th Street traffic would constantly be stopping before Highland Ave even though they didn't have a stop sign.
---- John Bazik <jsb at cs.brown.edu> wrote: 
> On Fri, Oct 12, 2007 at 10:30:37AM -0400, Allan Tear wrote:
> > Andrew, are there particular new stops to which you are referring?
> 
> I've got one: 5th and Highland.  That one is especially strange,
> since it stops ambulances on the way to the ER.
> 
> According to the Manual on Uniform Traffic Control Devices
> (http://mutcd.fhwa.dot.gov/HTM/2003r1/html-index.htm), section
> 2B-07, "Multiway Stop Applications," the criteria for a 4-way
> stop sign are:
> 
>    A. Where traffic control signals are justified, the multiway stop is
>       an interim measure that can be installed quickly to control traffic
>       while arrangements are being made for the installation of the
>       traffic control signal.
> 
>    B. A crash problem, as indicated by 5 or more reported crashes in a
>       12-month period that are susceptible to correction by a multiway
>       stop installation. Such crashes include right- and left-turn
>       collisions as well as right-angle collisions.
> 
>    C. Minimum volumes:
>          1. The vehicular volume entering the intersection from the
>             major street approaches (total of both approaches) averages
>             at least 300 vehicles per hour for any 8 hours of an average
>             day, and
> 
>          2. The combined vehicular, pedestrian, and bicycle volume
>             entering the intersection from the minor street approaches
>             (total of both approaches) averages at least 200 units
>             per hour for the same 8 hours, with an average delay to
>             minor-street vehicular traffic of at least 30 seconds per
>             vehicle during the highest hour, but
> 
>          3. If the 85th-percentile approach speed of the major-street
>             traffic exceeds 65 km/h or exceeds 40 mph, the minimum
>             vehicular volume warrants are 70 percent of the above values.
> 
>    D. Where no single criterion is satisfied, but where Criteria B, C.1,
>       and C.2 are all satisfied to 80 percent of the minimum
>       values. Criterion C.3 is excluded from this condition.
> 
> I suspect those criteria are rarely met when 4-way stops are put in.
> 
> John
> 
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