[Adopted 11-9-2011 by Ord. No. 2527[1]]
[1]
Editor's Note: This ordinance also repealed former Art. IV,
Standards for Street Construction and Acceptance, adopted 6-10-1986
by Ord. No. 1533.
A.
Reaction clause. It is hereby ordained and enacted by the Council
of the Municipality of Monroeville, County of Allegheny, Commonwealth
of Pennsylvania, that from and after the passage and approval of this
article the following regulations shall be in full force and effect.
The provisions of this article shall be held to be the minimum requirements
for the protection of the health, safety and welfare of the people
at large, and to be designed to encourage the establishment and maintenance
of reasonable community standards of physical environment.
B.
Title. This article shall be cited as the Municipality of Monroeville
"Street and Traffic Standards Ordinance."
D.
Legislative intent. It is the intent of this article to regulate
transportation practices and to allow for and encourage proper transportation
management within the Municipality of Monroeville.
E.
Compliance. No person shall propose, design, or construct streets
or traffic facilities within the Municipality of Monroeville except
in full compliance with all the provisions of these regulations.
F.
Liability. Neither acceptance of a street or traffic control facility
under the provisions of these regulations, nor compliance with its
provisions, nor conformance with conditions required by any such acceptance
shall relieve any person from liability for damage, nor attach any
liability upon the Municipality for damages to persons or property.
A.
Functional classification of streets. The design of a street system
shall include the classification of streets based on their functions
and projected traffic as follows:
(1)
Each street shall be designed for its entire length to meet the standards
for its classification.
(2)
The classification of each street shall be based upon the projection
of traffic volumes 10 years after its completion. Traffic volumes
shall be calculated in accordance with trip generation rates published
in the most recent edition of the Institute of Traffic Engineers (ITE)
Trip Generation Manual or alternate source acceptable to the Municipality,
and shall consider all traffic likely to use each street.
(3)
Classifications.
(c)
Local:
[1]
Serves primarily to provide direct access to abutting property
and residential lots. Should be designed to discourage through traffic.
[2]
Average daily traffic: zero to 500.
[3]
Roads constructed in any Zoning District other than R-1 through
R-4 shall be designed in accordance with the "Typical Street Section
- Heavy Duty Local Street" detail in the Standards for Construction.[1]
[1]
Editor's Note: The Standards for Construction are included
in an attachment to this chapter.
B.
Special purpose streets.
(1)
Private streets. Private streets may be permitted by the Municipality,
with the following conditions:
(a)
Private streets shall comply with the design and construction
standards for public streets of the same functional class.
(b)
An agreement for maintenance of private streets shall be recorded
with the final plan and shall include, in case of failure to maintain
in accordance with the agreement, an offer of dedication to the Municipality
together with provisions for funds sufficient to restore the private
street to the standards required for public streets prior to acceptance
of dedication.
(2)
Cul-de-sac streets shall comply with the following standards:
(a)
A cul-de-sac street serving a residential development shall
not provide the sole access for more than 50 dwellings.
(b)
A local cul-de-sac street shall end in a turnaround which has
a paved cartway of at least 74 feet in diameter and a right-of-way
width not less than 100 feet in diameter. (See Detail in the Standards
for Construction.[2])
[2]
Editor's Note: The Standards for Construction are included
in an attachment to this chapter.
(c)
A heavy-duty local cul-de-sac street shall end in a turnaround
which has a paved cartway of at least 78 feet in diameter and a right-of-way
width not less than 100 feet in diameter. (See Detail in the Standards
for Construction.[3])
[3]
Editor's Note: The Standards for Construction are included
in an attachment to this chapter.
(d)
A temporary turnaround shall be provided at the end of dead-end
streets which are intended to be extended as through streets in the
future. If the length of a dead-end street exceeds the depth of one
lot, the temporary turnaround shall be constructed with an all-weather
surface, a minimum cartway radius of 25 feet, and its use shall be
guaranteed to the public.
(e)
The terminus of a nonresidential cul-de-sac street shall be
designed so that the largest vehicles expected to use the street can
complete the turn without backing.
(f)
A cul-de-sac street shall be a minimum length of 250 feet and
shall not exceed 800 feet in length.
(g)
A "no outlet" sign shall be erected at the entrance to every
cul-de-sac or dead-end street, which shall comply with the standards
and specifications of the jurisdiction owning the intersecting street.
(h)
Snow stockpile area. The cul-de-sac design must allow for a
snow stockpile area as shown on the details in the Standards for Construction.[4] This will be used as an area to which snow can be plowed
and allowed to melt or be removed. No residential or utility structures
or fixtures, including driveways, mailboxes, or fire hydrants shall
be constructed in this area.
[4]
Editor's Note: The Standards for Construction are included
in an attachment to this chapter.
(3)
Half or partial streets shall not be permitted, except where needed
to complete existing half or partial streets.
(4)
Alleys may be permitted with the concurrence of the Municipality
and shall comply with the following standards.
(a)
Alleys may not be used as the only means of access to a lot.
(b)
Alleys shall only permit one-way traffic.
(c)
Alleys shall have a minimum right-of-way of 20 feet and a minimum
cartway of 16 feet.
(d)
A radius shall be provided at the alley intersection, sufficient
to accommodate any large vehicles that may be expected to use the
alley.
(e)
Dead-end alleys shall not be permitted without a turnaround,
and are subject to the approval of the Municipality.
C.
Minimum requirements and specifications.
(1)
Grading. All excavation and grading shall be performed to the edge
of the right-of-way line in accordance with the typical street section
details.
(2)
Subgrade. The subgrade must be well drained at all times to prevent
soil saturation. All unstable or unsuitable subgrade material must
be removed and replaced with compacted approved material as directed
by the Municipality. Prior to the placement of any subbase, the subgrade
shall be proof-rolled with a ten-to-fifteen-ton steel wheel roller
to determine the existence of any unsuitable or unstable material.
(4)
Pavement section. The pavement section shall be constructed in accordance
with the appropriate typical street section details in the Standards
for Construction. Construction of streets shall proceed in a timely
manner without undue delay. The subbase or aggregate base shall not
be exposed to the weather or allowed to become water saturated. Saturated
materials shall be removed and replaced as directed by the Municipality.
The Municipality will require final milling and paving of the pavement
prior to final acceptance.
(5)
Utility installations. All utilities, including but not limited to
water lines, gas lines, sanitary sewers, storm sewers, electric lines,
telephone, cable TV shall be placed outside of the cartway. All main
lines or service line crossings under the pavement shall be installed
to the right-of-way limits prior to pavement installation and backfilled
in accordance with the Standards for Construction.[6]
[6]
Editor's Note: The Standards for Construction are included
in an attachment to this chapter.
(6)
Storm sewer. All storm sewers shall be at least 15 inches in diameter or as required by the volume of stormwater runoff as determined in accordance with Chapter 319, Stormwater Management, of the Code of the Municipality of Monroeville. Inlets shall be of concrete construction. The tops of inlets shall be laid at the same grade as the street with the tops depressed one inch below the road surface. Inlet frames and grates shall be cast iron or structural steel.
(7)
Crown. All streets shall have a transverse slope in accordance with
the appropriate Standards for Construction.
(8)
Grades. No street shall have a grade exceeding that permitted by
this article.
D.
Driveways.
(1)
Regulations for driveways on non-Municipal streets shall be governed
by the entity with jurisdiction over the street.
(2)
For driveways entering Municipal streets the following requirements
shall be followed:
(a)
Driveways entering Municipal streets shall be at safe locations
that are approved by the Municipality at a distance not less than
20 feet from the nearest intersection (unless such distance is not
available). A safe sight distance shall be provided in accordance
with PennDOT Publication M 950-S Section A.
(b)
The minimum driveway width shall be 10 feet.
(c)
Driveways must be constructed of an all-weather wearing surface
such as crushed limestone, gravel, asphalt, concrete, brick, or slag
and shall not consist of lawn, dirt, mud, or any other surface which
can be tracked onto the street.
(d)
Driveways shall not interfere with the existing street drainage.
Where the street is curbed, the driveway approach shall be installed
1.5 inches above the street or gutter grade.
(e)
The driveway approach shall be positioned at, or as near to
as possible, right angles (90°) to the street as site conditions
permit.
(f)
The difference between the cross-slope of the street and the
upward/downward grade of the first 10 feet of the driveway shall not
exceed 8%.
(g)
Shared driveways for up to four houses shall be permitted.
F.
Street grades.
(1)
The entire width of each street's right-of-way in a proposed development
shall be graded in accordance with the standard detail applicable
to the street classification.
(2)
The minimum permitted street grade for all streets shall be 1%.
(4)
Street grades shall be measured along the center line of the street.
(5)
Center-line grade on the head of a cul-de-sac shall not exceed 5%.
(6)
Guide rail shall be provided as per PennDOT Design Manual, Part 2,
Chapter 12.
G.
Street alignment.
(2)
Minimum center-line radii for horizontal curves shall be as follows:
(a)
Arterial: 833 feet, with a maximum superelevation rate of 6%.
(b)
Collector: 444 feet, with a maximum superelevation rate of 8%.
(c)
Local: 215 feet, with a maximum superelevation e rate of 8%.
(d)
For other than local streets, a minimum tangent of 100 feet between reverse curves shall be provided. For local streets a lesser tangent may be acceptable, provided safe stopping sight distances are maintained as per § 320-34G(1). Broken-back curves shall be avoided; however, when they must be used, a minimum tangent of 150 feet shall be provided.
(e)
Vertical curves shall be provided for all changes in grade exceeding
1%. For each 1% of algebraic difference between tangent grades at
least 15 feet of vertical curve length shall be provided. In no case
shall the vertical curve length be less than the following minimums:
H.
Intersections.
(1)
The angle of intersecting streets shall be as close to 90° as
possible. No streets shall intersect at an angle less than 60°.
(3)
Intersections between more than two streets shall be avoided.
(4)
Where the grade of any street at the approach to an intersection
exceeds 5%, a leveling area shall be provided for the secondary intersecting
street. The transition grade shall not exceed 3% for a minimum distance
of 50 feet measured from the edge of the pavement of the intersecting
street.
(5)
An area of unobstructed vision shall be provided at every intersection.
The minimum clear sight triangle shall be measured:
(a)
Along the center lines of the intersecting streets, where L
= the distance along the center line of the primary through street,
measured from its intersection with the center line of the secondary
intersecting street, to an approaching vehicle on the primary street;
(b)
On the secondary intersecting street, from a point at least
14.5 feet back from the edge of the pavement of the primary through-street,
which is 3.5 feet above the surface of the pavement. Minimum values
for "L" are as follows:
(6)
No plantings or structures exceeding 30 inches in height shall be
permitted in the clear sight triangle. A public right-of-entry shall
be reserved for the purpose of removing any object that obstructs
the clear sight triangle.
(7)
Deceleration, turning, or merging lanes may be required by the Municipality
along existing and proposed collector or arterial roads.
(8)
Clearly marked crosswalks and handicapped-accessible curb ramps in
accordance with the Americans with Disabilities Act, latest edition,
and PennDOT's RC-67M, latest edition, shall be provided at intersections
where there are sidewalks or pedestrian walkways. The Municipality
may require crosswalks in other locations to ensure pedestrian safety
and convenience.
I.
Rights-of-way and cartways.
(1)
The right-of-way shall be measured from lot line to lot line and
shall be wide enough to contain the cartway, curbs, or shoulders,
and, when required, parking lanes, sidewalks, street trees, and bike
lanes.
(2)
The right-of-way width of a new street that is a continuation of
an existing street shall in no case be at a lesser width than that
of the existing right-of-way.
(3)
The right-of-way width shall consider future development in accordance
with the Comprehensive Plan as well as the plan for the proposed development.
(7)
Additional right-of-way and/or cartway widths may be required for
the following reasons:
J.
Curbs.
(1)
Curbing shall be required on all Municipal streets, unless authorized
to the contrary by the Municipality for stormwater management purposes.
(2)
The type of curb required on Municipal streets shall be bituminous
wedge curb.
(3)
Where curbing is not required, an edge treatment, such as a thickened
edge, shall be provided as needed for safety and to maintain the stability
of the pavement.
(4)
Concrete curbing may be permitted with the Municipality's consent
where its use is deemed advantageous to wedge curb due to special
circumstances.
K.
Shoulders and embankments.
(1)
Shoulders and drainage swales shall be used instead of curbs when:
(a)
Shoulders are required by state or other law;
(b)
Soil or topographic conditions make the use of shoulders and
drainage swales preferable;
(c)
In order to preserve the rural character of an existing community
or a proposed development;
(d)
Shoulders are needed for bicycle facilities;
(e)
Where omission of curbs is desirable for stormwater management.
(2)
Shoulders shall be a minimum of four feet in width on both sides
of the street, and shall be located within the right-of-way. Greater
shoulder widths may be provided if recommended by a registered professional
engineer and approved by the Municipality.
(3)
Shoulder material and construction shall be as recommended by a registered
professional engineer and shall be acceptable to the Municipal Engineer.
(4)
Swale design and construction material and construction shall be
as recommended by a registered professional engineer and shall be
acceptable to the Municipal Engineer.
L.
Bikeways.
(1)
All new streets shall be planned and constructed to safely accommodate
bicycle travel.
(2)
For residential developments which will generate 1,000 or more vehicle
trips per day, and for all major nonresidential developments, bicycle
traffic shall be accommodated in one of two ways:
(a)
A bikeway master plan, which identifies bike routes that safely
connect major traffic origins and destinations, shall be prepared.
The plan may propose a combination of existing and proposed bike lanes,
bike paths, shared pedestrian sidewalks and pathways, and shared vehicular
streets. The plan shall demonstrate how any paths, sidewalks or streets
that are proposed to be shared should be able to accommodate the shared
use safely.
(b)
For all developments, bike lanes shall be provided along any
new collector or arterial street constructed as part of the development.
(3)
Where a proposed development is within a reasonable distance of an
existing bikeway or a proposed bikeway included in a Municipal or
county bikeway plan or Official Map, the development plan shall provide
for connections to the existing or proposed bikeway.
M.
Public transportation.
(1)
Where a proposed development is adjacent to or within a reasonable
distance of collector or arterial roads where transit service is currently
provided or may be provided in the future, the applicant shall consult
with the Port Authority of Allegheny County, or other local transit
agencies, regarding street design requirements for buses and passenger
waiting areas and shelters.
(2)
Where a development site is adjacent to or includes a rail transit
facility or other exclusive transit right-of-way, the applicant shall
consult with the appropriate transit agency to determine whether any
special design features concerning the rail transit facilities will
be required.
N.
Sidewalks.
(1)
Improved sidewalks shall be included in all new developments on each
side of each road. Preference should be given to extending or connecting
to existing sidewalks instead of beginning a new sidewalk on the opposite
side of the street.
(2)
Public sidewalks shall in general be parallel to the street and within
the right-of-way.
(3)
Alternative locations will be considered, provided that safe and
convenient pedestrian circulation is maintained.
(4)
Sidewalks and pathways shall have a minimum width of four feet in
residential areas and five feet in nonresidential areas. Greater widths
may be required near major pedestrian generators.
(5)
Sidewalks and curb ramps shall be constructed in accordance with
the Americans with Disabilities Act, latest edition, and PennDOT's
RC-67M, latest edition.
(7)
Curb ramps shall be provided at all intersections as per § 320-34H(8).
O.
Streetlights.
(1)
Streetlighting shall be provided for all nonresidential developments,
multifamily residential developments, and single-family residential
developments requiring either the construction of new streets or the
extension of existing streets.
(2)
Streetlights shall be provided at all street intersections and at
the access drives of all nonresidential developments.
P.
Street name signs.
(1)
Street name signs shall be provided at all new street intersections.
(2)
Street name signs shall be installed under streetlights and shall
be free of all visual obstructions.
(3)
The design of street name signs shall be in accordance with the Manual
of Unified Traffic Control Devices (MUTCD) for Streets and Highways,
and shall meet all state and Municipal requirements.
A.
Minimum level of service.
(1)
All proposed streets and intersections in a subdivision or land development
shall be designed to function at Level of Service A or B.
(2)
The existing level of service on any adjacent street and intersection
that will be affected by a proposed subdivision or land development
shall not fall below Level C if it is currently A, B, or C, and shall
not be further reduced if it is at Level D, E, or F.
B.
Traffic impact study.
(1)
A traffic impact study shall be required for a subdivision or land
development which will generate 100 or more peak hour trips when fully
developed. A traffic impact study may also be required by the Municipality
to assess the impacts of smaller projects if traffic congestion or
safety problems already exist.
(a)
When existing or proposed site development directly intersects
a state-owned roadway, the study will be performed in accordance with
the most current policies and procedures included in PennDOT's Transportation
Impact Study Guidelines.
(2)
The study shall be conducted in accordance with the recommended practice,
Traffic Access and Impact Studies for Site Development, published
by the Institute of Transportation Engineers, 1988, or in accordance
with an equivalent methodology endorsed by transportation engineers.
(a)
The scope of the study, study area, and methodology shall be
approved by the Municipality before the study is initiated. A preapplication
conference shall be scheduled for this purpose.
[1]
When existing or proposed site development directly accesses
a state-owned roadway, a scoping meeting application will be provided
and meeting held as per PennDOT requirements.
(b)
The study shall be performed by, or under the supervision of,
a professional engineer, licensed in the Commonwealth of Pennsylvania,
with training in traffic and transportation engineering studies, and
experience in the preparation of traffic studies.
C.
Required findings.
(1)
The traffic impact study must demonstrate that the levels of service specified in § 320-35A will be met by the proposed development and that the circulation plan for the development will function safely and efficiently.
(2)
The study shall describe any measures which have been incorporated
into the development plan in order to achieve the required conditions.
Such measures may include, but are not limited to:
(a)
A reduction in the density or intensity of the proposed development;
(b)
Measures to reduce traffic impacts, such as clustering of buildings
for easy access by transit or ride-sharing vehicles, or the inclusion
of transit-related improvements;
(c)
The phasing of construction to coincide with the completion
of transportation improvements which have been programmed by the Municipality,
county, or state;
(d)
The construction of on-site transportation improvements;
(e)
The construction of off-site transportation improvements;
(f)
The extension of transit, bicycle, or pedestrian services to
the site or the sponsorship of a ride-sharing program or transit subsidies
for employees;
(g)
Any combination of the above or additional measures.
(3)
Any traffic impact mitigation measures which are not physical site
improvements shall be incorporated into the development agreement
executed between the Municipality and the applicant and shall be recorded
with the land development plan.
D.
Traffic control signs.
A.
Inspection and approval.
(1)
All public streets which are the subject of construction or reconstruction
by contractors and all private streets which are the subject of construction
by developers intended to be dedicated to the Municipality shall be
subject to inspection and approval as set forth herein.
(a)
Such inspection and approval may require a full-time inspector
to be present during all construction activities at the discretion
of the Municipality.
(b)
The cost of any such inspections or the employment of inspectors
shall be reimbursed by any contractor of a public street which is
the subject of construction or reconstruction or by any developer
constructing a street intended to be dedicated to the Municipality
upon the Municipality's acceptance of the street.
(2)
The inspection and approval process is as follows:
(c)
A final inspection shall be conducted by the Municipality's
inspector and the contractor or developer.
[1]
In the case of the final inspection of the public street constructed
or reconstructed by a contractor or developer, any deficiencies noted
during the inspection shall be corrected immediately by the contractor
or developer.
[2]
If there are any deficiencies in respect of the contractor failing
to supply all required information or schedule inspections at key
stages of construction:
[a]
The contractor shall take four-inch-diameter core
samples of the pavement and base and have the same verified by an
independent testing laboratory designated by the Municipality for
material content, depth, and density at the cost of the contractor.
[b]
One sample shall be taken for every 2,000 square
yards of street surface paved, with a minimum of two samples per street.
[c]
All cores shall be backfilled and sealed immediately
with compacted approved material.
[d]
A twelve-inch-square slab shall also be taken if
required by the Municipality for every 2,000 square yards and tested
for material content, depth, and density, the cost of which shall
be paid by the contractor.
[3]
Any deficiencies noted during the inspection or from the testing
as described herein shall be corrected as a condition to any acceptance
of the offer of dedication.
B.
Review of streets intended to be dedicated. In the event an owner
or developer of a street intends to dedicate the same to the Municipality
for acceptance by the Municipality, a request for dedication shall
be the subject of review and consideration by Municipal Council.
(1)
In respect of proposed streets intended to be dedicated, plans shall
be submitted for review by the Municipality under the seal of a Professional
Engineer registered in the Commonwealth of Pennsylvania. Such plans
shall contain the following:
(a)
Block showing the applicant's name, location of the project,
engineer's name and address, date, and scale.
(b)
Location of all adjacent lot or boundary lines.
(c)
Legal description of the right-of-way.
(d)
Proposed width of right-of-way.
(e)
Location of all proposed or existing utilities, including fire
hydrants.
(f)
Profile of existing and proposed center line.
(g)
Horizontal and vertical data for all intersecting streets for
a distance of 250 feet in each direction from each intersection.
(h)
Profiles of any existing or proposed utility lines in the right-of-way
(i)
Storm sewers and runoff calculations.
(j)
Soil erosion and sediment control plan.
(k)
Proposed cartway width.
(l)
Location of any streams, springs, or drainageways.
(m)
Scale not less than one inch equals 100 feet.
(n)
Sheets not larger than 24 inches by 36 inches.
(o)
Other pertinent information, including subsurface soil conditions,
as deemed necessary by the Municipal Engineer.
(2)
In the event the street intended for dedication has already been
constructed, as-built plans containing the width and described information
shall be submitted to the Municipality for review and a determination
as to which inspections and testing are necessary prior to any submission
to the Municipal Council.
(3)
The review of the Municipal Council shall include, but is not limited
to:
(a)
A determination as to whether the owner or the developer making the request to dedicate a street for acceptance complied with any and all development proposals and conditions attached thereto in respect of Chapter 324, Subdivision and Land Development, and Chapter 359, Zoning, where the street is located.
(b)
Obtaining an engineering report as to what tests have been performed
and what tests need to be performed upon the street to determine whether
it meets specifications of the Municipality, the cost of which shall
be paid by the owner or developer.
(c)
Determining other necessary improvements.
(4)
Public notice or advertising is required for any request by a private
developer for dedication or consideration by the Municipal Council
for acceptance.
(5)
The request by an owner or developer of a street for acceptance by
the Municipality or the review or consideration of the same by the
Municipality shall not impose any time limit or deadline or liability
upon the Municipal Council to make a final determination whether to
accept the offer of a dedication of a street or not to accept the
same.
(6)
The cost to the Municipality of all tests performed upon any street
which is proposed to be accepted by the Municipality as well as the
cost of engineering studies and reports shall be paid by the owner
requesting that the Municipality accept the streets. Payment for such
cost shall be made in advance in accordance with estimates of costs
by the Municipality.
C.
Bonds. For streets constructed or reconstructed by a contractor or
developer, a maintenance bond of 15% for all improvements guaranteeing
the street free and clear from defects and material workmanship for
a period of not less than 18 months shall be filed as well as such
other bonds as are required under the contract documents.
A.
General terms. Unless otherwise expressly stated, the following terms
shall have the meaning indicated below.
(1)
Words and phrases used in the singular include the plural, and
words and phrases used in the plural include the singular.
(2)
Gender-specific pronouns or references shall refer to all genders.
(3)
The word "person" indicates any person or any corporation, unincorporated
association, partnership, estate, or other legal entity.
(4)
The word "lot" includes the word "plot" or "parcel."
(5)
The word "structure" includes "building" and the use of either
word shall be construed as if followed by the phrase "or a part thereof."
(6)
The word "may" is permissive; the words "shall" and "will" are
mandatory.
(7)
Periods of time stated as a number of days refer to consecutive
calendar days, unless specified as "working days."
(8)
Words in the present tense include the future tense.
B.
ACCESS DRIVE
ADT
ALLEY (SERVICE STREET)
BIKEWAY
BLOCK
CAPACITY
CARTWAY
CLEAR SIGHT TRIANGLE
COLLECTOR STREET
CUL-DE-SAC
ENGINEER
IMPROVEMENTS
LANDSLIDE-PRONE AREA
LANDSLIDE SUSCEPTIBILITY MAP OF ALLEGHENY COUNTY
LOCAL ACCESS STREET
LOT AREA
PEAK TRAFFIC HOUR
REGISTERED PROFESSIONAL
SIGHT DISTANCE
SOIL SURVEY OF ALLEGHENY COUNTY
STEEP SLOPE
STREET
(1)
(a)
(b)
(2)
(3)
(4)
(5)
(6)
(7)
STREET, PRIVATE
TRIP
Specific terms. Other terms or words used in this article are defined
as follows:
See "street."
Average daily traffic volume.
See "street."
Either of the following:
A unit of land containing one or more lots, bounded by existing
or proposed streets, waterways, railroads, public lands, or other
barriers to contiguous development.
When used in reference to a street, the maximum traffic volume
for which such street can provide adequate service.
The portion of a street, drive, or alley that is available
for vehicular traffic.
An area of unobstructed vision at a street intersection defined
by lines of sight between specified points on the center lines of
the intersecting streets.
See "street."
See "street."
A professional engineer registered by the Commonwealth of
Pennsylvania. See "registered professional."
Physical changes to land, including but not limited to grading,
removal of vegetation, buildings, landscaping, pavement, curbs, gutters,
storm sewers and drains, changes to existing watercourses, sidewalks,
street signs, monuments, water supply facilities, and sewage disposal
facilities.
Land that is susceptible to movement or sliding, as identified
in the Soil Survey of Allegheny County, prepared by the Soil Conservation
Service of the United States Department of Agriculture; or as identified
on the Landslide Susceptibility Map of Allegheny County; or as identified
in the Mining and Physiographic Study, Allegheny County, Pennsylvania,
prepared by A.C. Ackenheil & Associates; or as established by
geotechnical investigation.
A map delineating areas judged to be susceptible to landsliding
or movement, prepared by the United States Geological Survey on 7.5
minute quadrangle maps of the county in 1974.
See "street."
The area contained within the lot lines of the individual
parcels of land as shown on a subdivision plan, excluding the area
within the street right-of-way or easement for overhead utility lines
but including any easements, expressed in terms of acres or square
feet.
The hour during which the heaviest volume of traffic occurs.
An individual, licensed in the Commonwealth of Pennsylvania
to perform services or activities required by provisions of this article
and qualified by training and experience to perform the specific services
and/or activities with technical competence.
The length of road visible to the driver of a vehicle at
any given point in the road when viewing is unobstructed by traffic.
A series of aerial photographs on which soils are classified
according to a variety of characteristics and accompanying explanatory
text, prepared by the United States Department of Agriculture, Soil
Conservation Service, August 1981. (Note: The Soil Conservation Service
is now the Natural Resources Conservation Service.)
Any land area with a grade that exceeds four horizontal to
one vertical or 25%.
A strip of land, including the entire right-of-way, publicly
or privately owned, serving primarily as a means of vehicular travel,
encompassing the following types:
ARTERIAL STREETStreets which are used primarily for through, fast traffic at high volumes.
Minor arterials. Interconnects with and augments principal arterials;
accommodates trips of moderate length; distributes travel to areas
smaller than identified with higher systems; places emphasis on land
access and offers lower traffic mobility; and spacing is normally
not more than one mile.
Principal arterials. Serves major centers of activity and carries
high proportion of area travel even though it constitutes a relatively
small percentage of the total roadway network; integrates both internally
and between major rural connections; carries most trips entering and
leaving the area and serves intra-area travel; provides continuity
for rural arterials; and spacing is related to trip-end density characteristics.
COLLECTOR STREETSProvides both land access services and traffic circulation; distributes trips from arterials through residential neighborhoods to ultimate destination; and collects traffic from local streets and channels to arterials.
INTERSTATES AND OTHER LIMITED-ACCESS FREEWAYSProvides limited-access facilities.
LOCAL ROADSComprises all facilities not in one of the higher systems; permits direct access to abutting lands and connects higher systems; and discourages through-traffic movement.
ALLEYA service road that provides secondary means of through access to lots.
CUL-DE-SACA street with a single means of ingress and egress and a turnaround.
ACCESS DRIVEA private drive providing access between a public or private street and a parking area within a land development, or any driveway servicing two or more buildings or uses.
A street not accepted for dedication by a Municipality.
A single or one-directional vehicle movement.
