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Figure 18:
Table 5 - Signalized Inter:
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Factory Street and/or Temple Street Two-way Conversion Alternative
Converting Factory Street to two-way operation while maintaining full access/egress
at Water Street would be problematic given the poor sight line available for motorists
turning from Water Street. The sight line is limited by the building located on the
northeast corner of the Factory Street/Water Street intersection. However, the sight
line issue would be negated if the Factory Street two-way conversion was combined
with the closure of the west segment of Water Street as provide under the Water
Street Pedestrian Corridor alternative.
section Capacity Analysis Summary
Main St. at Water/Park St.
Main St. at Factory/Temple St.
2-Way Alternative
Existing 1-Way (2-Lane West Approach
(Excl. PED) Split Phase and Excl. PED)
v/c* Delay** LOS*** v/c Delay LOS
PM 0.62 29 G 0.63 26 Cc
PM 0.46 26 Cc 0.71 36 D
* Volume to Capacity Ratio.
** Delay in seconds per vehicle,
*** Level of Service.
\whbiprofiBedford52700,00 Nashua
Circulation Study\reports\Final RaportFinal
Repori.dacx
34
Under this two-way conversion, the intersection of Main Street at Factory
Street /Temple Street show an increase in delay and drop a level of service from LOS
C to LOS D during the weekday evening peak hour. This deterioration in operations
is due to the need to add phases to the existing traffic signal. The rule of thumb is
when a phase is added to an existing traffic signal, operations will decrease one level
of service. This is what occurs here. There is potential to mitigate some of this
increase in delay if the exclusive pedestrian phase was removed and current
pedestrian phasing was used at this intersection.
Alternatives Evaluation
