Active Transportation Edits to the CTN
Field Edits
Fields in bold need to be edited when updating the CTN; the rest serve for reference:
SEGMENT_ID: Unique segment id from Street Segment feature, NULL if modified
NETWORK_ID: Unique id based on segment id or object id if feature was modified
FULL_STREET_NAME: From Street Segment feature
PREFIX_DIRECTION: From Street Segment feature
Domain
Description
E
East
N
North
S
South
W
West
PREFIX_TYPE: From Street Segment feature
STREET_NAME: : From Street Segment feature
STREET_TYPE: : From Street Segment feature
SUFFIX_DIRECTION: From Street Segment feature
Domain
Description
EB
Eastbound
NB
Northbound
SB
Southbound
WB
Westbound
ORIENTATION: Orientation of segment, from E to W or N to S
Domain
Description
NS
North to South
EW
East to West
MODIFICATION: Type of modification made to feature
Domain
Description
Added
New feature
Attribute
Attribute change
Geography
Re-alignments
Split
Splitting lines
None
None
LINE_TYPE: Location of the line in the network
Domain
Description
On-Street
Roadways
Off-Street
Trails, transit
Off-Street Connector
Connects off-street facilities with on-street facilities
Street Crossing
Shows off-street facilities' continuity across streets
BUILT_STATUS: Current status of Urban Trails. This field needs to be renamed URBAN_TRAIL_BUILT_STATUS, moved to the Urban Trails section, and the domains need to match those of the Urban Trails dataset.
Domain
Description
Existing
Existing Urban Trail
Funded
Funded Urban Trail
Proposed
Proposed Urban Trail
FACILITY_TYPE: Type of facility by mode. This field's domains may need updating.
Domain
Description
Roadway
Roadway
Transit
Transit
Urban Trail
Urban Trail
BICYCLE_FACILITY: Type of bicycle facility.
Domain
Description
Bike Lane
A portion of the roadway that has been designated by striping, signage, and pavement markings for the preferential or exclusive use by bicyclists. A bike lane has no physical barrier (bollards, medians, raised curbs, etc) that restrict the encroachment of motorized traffic. Bike lanes are traditionally located on the right-hand side of the street, but can be located on the left-hand side of the street in specific situations. Bike lanes typically run in the same direction as traffic. See Bike Lane - Contraflow below for other configurations.
Bike Lane - Buffered
Similar in every way to a bike lane, but are typically wider, and are separated from traffic by two wide stripes, as opposed to the single stripe of conventional bike lanes.
Bike Lane - Climbing
Climbing Bike Lanes are installed on steep roads going up hill in order to allow cyclists to climb the hill at their own pace, and without traffic intereference. In most cases where climbing bike lanes exist, only a sharrow is used in the down-hill direction. In cases where climbing bike lanes and sharrows are present, mark the bicycle facility as a climbing lane (see South Lamar between Barton Springs and Treadwell for an example).
Bike Lane - Painted
Painted Bike Lanes are usually found at intersections, and the paint is meant to highlight the location of cyclists on the road.
Bike Lane - Contraflow
Contraflow bike lanes are installed on low-traffic corridors necessary for the connectivity of a particular bicycle route (see N Lamar Service Rd between 5th and 3rd for an example)
Bike Lane - Protected One-Way
An exclusive facility that combines the user experience of a separated path with the on-street infrastructure of a conventional bike lane. A protected bicycle lane is physically separated from motor vehicle traffic and distinct from the sidewalk. Protected bicycle lanes may be at street level, at sidewalk level, or at an intermediate height.
Bike Lane - Protected Two-Way
An exclusive facility that combines the user experience of a separated path with the on-street infrastructure of a conventional bike lane. A protected bicycle lane is physically separated from motor vehicle traffic and distinct from the sidewalk. Protected bicycle lanes may be at street level, at sidewalk level, or at an intermediate height.
Bike Lane - wParking
Bike Lanes where parking is allowed (see Lost Creek Boulevard)
Neighborhood Bikeway
The following are the recommended speed and volume targets (2014): Speeds: the 85th percentile speed should be managed to be at 25 mph or less, with 20 mph as the preferred speed. Volumes: motor vehicle volumes should be managed to be under 1500 vehicles per day, with up to 3000 vehicles per day allowed in limited sections of the corridor. Additionally, quiet streets must have signage and sharrows. Check with Active Transportation to see if definition has been updated recently.
Sharrows
Street markings placed in the travel lane to indicate where people should preferably cycle.
Wide Shoulder
A shoulder can accommodate bicyclists if it is adequate in width (~10 ft min)
Wide Curb Lane
A wide curb lane is 14'+ outside lane, typically along TXDOT highway projects.
Trail - Paved
Paths physically separated from motorized vehicular traffic by an open space or barrier and are located either within the road right-of-way, or accommodated in another way, such as parkland. Paved Trails are shared by multiple users, and may also be known as Urban Trails or Shared Use Path, depending on jurisdiction.
Trail - Unpaved
Crushed granite trails that are typically ADA-accessible
Bridge
Bridges connect facilities across natural barriers, such as creeks. Bridges are only attributed as such when they connect off-street facilities, such as paved and unpaved trails. It is not necessary to designate roadway bridges, such as the Ann Richards Bridge.
ONE_WAY: Direction of Travel
Domain
Description
N
None
FT
To-from (order in which segment was digitized)
TF
From-to (order in which segment was digitized)
B
Bidirectional
CROSS_SECTION_DETAIL: This is a detailed cross section of road elements that may occur between face of curbs or edge of pavements.
Anytime a transition occurs either by pavement marker or physical barrier, a new item should be noted and separated with a “-“. Examples detailed cross sections are shown below:
4 Lane divided with a median: T-T-MED-T-T
3 Lane section with Bike Lanes: BL-T-CTL-T-BL
2 Lane undivided: T-CL-T
Unmarked Road: UNMARKED
2 lane one-way road: OW-T-T
The following designations should be used as a comprehensive library of “tags” for this attribute:
BL = Bike Lane
BBL = Buffered Bike Lane
PBL = Protected Bike Lane (behind raised curb or another physical separator)
CTO = One-way Cycletrack
CTT = Two-way Cycletrack
CL = Center Line
CTL = Center Turn Lane
MED = Median (can be curbed or open ditch)
OW = One Way road (should be used to denote one-way roads at beginning of description)
P = Parking
S = Shoulder
UNMARKED = No pavement markings
CROSS_SECTION_GENERAL: This is a generalized classification of a roadway that describes: number of lanes, if a segment is divided or undivided (center turn lanes will be an odd number undivided), if a facility is one-way.
In addition, if a road is a 2-lane undivided or 3-lane undivided, special designation should be given for highways (-H) and gravel road types (-G). Highways can be defined as TxDOT or County Facilities (FM, RM, CR, SH, etc. designations) or 50 mph and up. This will be used for capacity determination in future stages of the CIP process.
Examples:
2U = 2 lanes, undivided
2U-H = 2 lanes, undivided highway
2U-G = 2 lanes, undivided gravel
4D = 4 lanes, divided
4D-OP = 4 lanes, divided with On-street Parking
Detailed to Generalized examples:
T-T-MED-T-T = 4D (4 travel lanes with a raised median)
BL-T-T-MED-T-T-BL = 4D (4 travel lanes with a raised median) and Existing Bicycle Facility says Bike Lane
BBL-T-CTL-T-BBL = 3U (2 travel lanes with a center turn lane) and Existing Bicycle Facility say Buffered Bike Lane
T-T-CTL-T-T = 5U (4 travel lanes with a center turn lane)
T-T-CL-T-T = 4U (4 travel lanes) CL = Centerline
STREET_LEVEL: Street type level (currently only using numbers as values). Need actual definition as to what the levels represent.
Domain
Description
0
Level 0
1
Level 1
2
Level 2
3
Level 3
4
Level 4
5
Level 5
BIKE_ROUTE_NAME: Name of designated bike route (legacy field, not maintained)
BIKE_LEVEL_OF_COMFORT: Level of Comfort of bike facility. See Reference section for more on Level of Comfort Mapping. All lines are drawn with a background line color
48484aDomain
Description
Bike Map RGB Color
High (H)
High Comfort ratings are most commonly associated with Protected and Buffered Bike Lanes, given the separation from traffic. However, other factors may result in other bike facilities to receive this rating, such as traffic volume, so it is possible that Bike Lanes, and even Shared Lanes receive this rating.
184, 211, 56High Paved (HP)
High Paved Comfort ratings are used on paved trails, typically Urban Trails (paved, 10'-12' wide)
91, 125, 54High Unpaved (HU)
High Unpaved Comfort ratings are used for unpaved trails that are suitable for transportation by users of all ages and abilities. This typically includes crushed granite trails shared with pedestrians (see Lady Bird Lake Trail), but would not include the Barton Creek Greenbelt, as it is more difficult terrain that is only truly accessible on a mountain bike and requires significant skill to traverse.
91, 125, 54Medium (M)
Medium Comfort Ratings are most commonly associated with bike lanes, although other factors may result in other bicycle facilities to receive this rating. In fact, it is not uncommon for roadways without bicycle facilities to be rated M, as their traffic volume, street connectivity and speed limits may lead to a comfortable bicycle ride without needing further improvements. Routes suggested by citizens, for example are often designated as M.
89, 168, 199Low (L)
Low Comfort roads are associated with high traffic volumes and speeds, and little or no bicycle facilities. Roads rated as L are marked because they are key route connections.
205, 158, 35Extremely Low (EL)
Extremely Low Comfort ratings are given to roads not recommended for bicycle travel, and must be used with extreme caution. They are rated because they are often the only connection to other bicycle facilities.
238, 56, 114Rough Trail (RT)
Rough Trail ratings are given to unpaved trails that are not accessible for transportation to users of all ages and abilities, and often require a mountain bike and considerable skill to traverse. They are rated when they provide key connections to on-street facilities.
53, 80, 28Helpful Sidewalk (SS)
Helpful Sidewalk ratings are given to sidewalks that provide a safer connection between bicycle facilities than riding on the road. Helpful sidewalks are typically found along highways, and may sometimes connect to to paved and unpaved trails.
204, 204, 204Minor Trail (TC)
This rating applies to trails, whether paved or unpaved that is accessible to people of all ages and abilities, but that is not wide enough to accommodate two-way traffic easily. These are often connections from trails to on-street facilities.
53, 80, 28REC_BICYCLE_FACILITY: recommended bicycle facility in 2014 Bike Plan
Domain
Domain Description
Same as BICYCLE_FACILITY above
Same as BICYCLE_FACILITY above
REC_BICYCLE_AAANETWORK: All Ages and Abilities Network, as adopted by or proposed to Austin City Council.
Domain
Domain Description
CouncilAdopted
AAA Facility adopted by Austin City Council
CouncilAdoptedAltAlignment
AAA Facility alternate alignment adopted by Austin City Council
Proposed
AAA Facility proposed to Austin City Council
REC_BIKE_PRIORITY: Recommended Bicycle Facility in the All Ages & Abilities Network.
Domain
Domain Description
Y
Yes
N
No
REC_URBAN_TRAIL_PRIORITY: Tier recommended in the 2014 Urban Trails Master Plan
Domain
Domain Description
Tier 1
Tier 1 Trails are those that have been identifi ed as serving a high number of potential users. These trails are often located near dense population; connect to multiple destinations and attractions; and have been partially constructed. Many Tier I trails have existing trail segments or are partially funded.
Tier 2
Tier 2 Trails are those that have been identifi ed either during the planning process for this plan or during previous trail planning processes.
CREATED_BY: Automatically filled audit field
CREATED_DATE: Automatically filled audit field
MODIFIED_BY: Automatically filled audit field
MODIFIED_DATE: Automatically filled audit field
URBAN_TRAIL_NETWORK_ID: ID field imported from the urban.trail.network dataset on MAINT.
URBAN_TRAILS_DATA_SOURCE: Source for Urban Trail.
Domain
Domain Description
UTMP
2014 Urban Trails Master Plan
ASMP
Austin Strategic Mobility Plan
URBAN_TRAIL_TYPE: Need definition from Urban Trails Staff.
LOCATION: Relative location of Urban Trail.
Geometry Edits
Geometry edits happen when new off-street facilities are added, or when on- to off-street connections and crossing are mapped. The new geometry will need to connect to the relevant segments for proper networking.
Off-street crossings: these connect trails end-to-end across streets. Off-street crossings generally carry the level of comfort, which will may be lower than the level of comfort of the off-street facility, depending on several factors. Generally the level of comfort will drop from High to Medium. Consult Sophia Benner or other available ATSD staff when in doubt.
Off-street connectors: these connect off-street segments end-to-end with on-street segments. off-street connectors may carry the level of comfort of the off-street facility if there is no street crossing
Urban Trails
When Urban Trails are completed, align CTN geometry to UT geometry. The Urban Trails data can be found on MAINT. Ask Janny Phung at PWD for access to the data.
Urban Trails can be more segmented than the CTN. Whenever an existing urban trail is segmented, the CTN must be split.
Bike Facility
The BIKE_FACILITY for Urban Trails is typically Trail - Paved, but sometimes it is Bridge. Trail - Unpaved has recently become acceptable for Urban Trails as well (see the Violet Crown Trail). Whenever an Urban Trail crosses or connects with the street network, the BIKE_FACILITY is assigned to either off-street connectors or off-street crossings, depending on which geometry carries the level of comfort.
Level of Comfort
Not all UT segments carry a high comfort paved rating. Street Crossings are lower comfort level, typically Medium. There are scenarios where lower than medium level of comfort is more appropriate. This topic is currently being discussed with Sophia Benner in ATSD.
If an Urban Trail is not offset from a high-speed high-volume road, it may be inappropriate to assign high paved, and instead assign helpful sidewalk level of comfort to it. The off-set distance is not a set measurement (although there could be a minimum threshold for high-paved) and may depend on other attributes of the parallel road. See Parmer Lane for a case study.
Reference Documents:
2014 Bicycle Master Plan Update
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