design elements - San Jacinto Texas Historic District

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Traffi c Calming Measures Defi nition Traffi c calming measures such as tightened curb radii at intersections, crosswalk markings, and curb extensions reduce the potential for confl icts between people and vehicles in urban street environments. By decreasing the radius of curbs at intersections the length of crosswalks can be reduced and right turning vehicles can be forced to reduce their speed through the turn. Crosswalk markings direct the fl ow of pedestrian traffi c at intersections and make approaching drivers aware of pedestrians. Curb extensions (also known as bulb outs, or neck downs) are areas of the parkway that extend out into the road area. These occur at intersections, or mid-block crossings where they serve to reduce the crosswalk distance and enhance the pedestrian environment. Applicability The Institute of Transportation Engineers (ITE) promotes a transportation planning model known as Context Sensitive Solutions (CSS) that identifi es ways to integrate traffi c 146 │ APPENDICES calming measures. CSS defi nes a range of recommended practices to improve pedestrian safety and circulation. Many of these practices are applicable to street intersections where the majority of confl icts between people and vehicles are likely to occur. (For more information go to htt p:// www.contextsensitivesolutions.org.) Benefi ts ■ ■ ■ ■ ■ Using a tighter, or smaller, curb radii at intersections can reduce the pedestrian crossing distance and force right-turning vehicles to reduce their speed. Marked crosswalks alert approaching drivers to the potential presence of pedestrians. Marked crosswalks restrict pedestrian crossings to determined locations. Curb extensions reduce the pedestrian crossing distance at intersections. Curb extensions alert motorists to the presence of a crosswalk and place waiting pedestrians into the driver’s fi eld of vision. Eff ect of Curb Radii on Pedestrian Crossing Distance (compared to 15 � . radius) Curb Return Radius (feet) Added Crossing Distance (feet) Added Crossing Time (Seconds)1 15 0 0 25 8 2 50 38 10 1 Crossing � me at 4� per second. SOURCE: TIMESAVER STANDARDS FOR LANDSCAPE ARCHITECTURE
Caption for IMAGE shown above. High frequency points for vehicle-pedestrian collisions. SOURCE: TIMESAVER STANDARDS FOR LANDSCAPE ARCHITECTURE ■ ■ The presence of curb extensions narrows the street width and can reduce driving speeds. Curb extensions separate parking maneuvers from vehicles turning at intersections. Cost Considerations ■ ■ ■ ■ The cost for retrofi tt ing an existing intersection with tighter curbs can range between $1,500 to $2,500 per corner depending upon existing conditions. The cost of painted crosswalk can range from $12 to $15 per lineal foot. To renovate an existing roadway surface with a separate paving material for the crosswalk area, a budget of $10 to $15 per square foot is recommended. To renovate an existing roadway with a curb extension a budget of $2,500 to $5,000 per corner is recommended. Design & Maintenance Considerations ■ ■ ■ ■ ■ The radii selected for intersection corners should accommodate the largest vehicle type that will frequently turn the corner. This principle assumes that the occasional large vehicle can encroach into the opposing travel lane, or mount the curb. A minimum marking treatment should consist of high contrast painted lines in accordance with the most recent edition of the Federal Highway Administration’s Manual on Uniform Traffi c Control Devices. See (htt p://mutcd.fh wa.dot.gov/) A bett er marking treatment will integrate a separate paving material within the crosswalk area that visibly contrasts with the road surface. This approach will be more durable and last longer than painted lines which will wear away. The <strong>design</strong> of curb extensions should respect street drainage patt erns so that rain water runoff does not collect behind them. The use of curb extensions should be limited to situations where on-street parking exists. SAN JACINTO TEXAS HISTORIC DISTRICT CORRIDOR STANDARDS │ 147
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Partners Baytown Channelview Deer P
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4 │ INTRODUCTION
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SAN JACINTO HISTORIC DISTRICT The S
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NATURAL HISTORY At the time of Euro
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FIRST PRINCIPLES A set of First Pri
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1. 2. 3. 4. Committed Sponsorship T
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II. Design Scenarios SAN JACINTO TE
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FREEWAY Planning and design along f
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Freeway Corridor Profi le The Corri
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Freeway intersections are of intere
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FARM TO MARKET ROADS Corridor desig
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The Corridor Profi le below present
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MAIN STREETS Main Street corridors
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Main Streets provide a broader rang
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Main Street areas lend themselves t
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LOCAL ROADS Design standards for Lo
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Local Roads are less dense and less
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COMMUNITY GATEWAYS Community Gatewa
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Community Gateways take a variety o
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As formal entryways into communitie
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PROJECT STARS SITES Design standard
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Project Stars sites occur throughou
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Project Stars sites require additio
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50 │ SCENARIOS
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DESIGN ELEMENTS Design Elements ref
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DESIGN INSPIRATION IMAGE:FAUNGG@FLI
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PLANT LISTS Non-Native* SHRUBS Pitt
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TOP 10 TREES Ilex opaca AMERICAN HO
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ICONOGRAPHY NEIGHBORHOOD PROJECT ST
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ICONOGRAPHY ICONS ■ The fi ve-poi
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LIGHTING Pedestrian Light (12’-15
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PAVERS Matrix #2088 Matrix #1914 Ma
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SITE FURNISHINGS Bike Rack ■ Indi
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FENCING Vinyl ‘Horse’ Fence ■
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FENCING Brick Column Option ■ Rep
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SIGNAGE Historic Street Signage ■
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GATEWAYS Morgan’s Point Estimated
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IV. Best Practices LA IN LI CI AM l
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LA 01 LA IN LI CI AM Design landsca
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LA 03 Whether planting along roads,
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LA 05 LA IN LI CI AM Minimize potab
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LA 07 LA IN LI CI AM Preserve exist
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LA 09 Street trees provide architec
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LA 11 LA IN LI CI AM Plant trees ap
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LA 13 LA IN LI CI AM Preserve and r
Page 97 and 98: INFRASTRUCTURE LA IN LI CI AM Our h
Page 99 and 100: Natural landforms provide visual in
Page 101 and 102: Permeable pavement used in parking
Page 103 and 104: Stormwater detention can be designe
Page 105 and 106: Native streamside buffer in a utili
Page 107: Landscaping and stormwater inlets c
Page 110 and 111: LI 01 LA IN LI CI AM Provide lighti
Page 112 and 113: LI 03 LA IN LI CI AM Incorporate li
Page 115 and 116: CIRCULATION Pedestrians and bicycli
Page 117 and 118: Curb bump outs help protect pedestr
Page 119 and 120: Separated bicycle paths are substan
Page 121: Indoor bicycle facilities. Covered
Page 124 and 125: AM 01 LA IN LI CI AM Create a netwo
Page 126 and 127: AM 03 LA IN LI CI AM Select furnish
Page 128 and 129: AM 05 LA IN LI CI AM Provide maps,
Page 130 and 131: 130 │ BEST PRACTICES
Page 133 and 134: APPENDIX A - STRATEGIES The San Jac
Page 135 and 136: Water resources can also be used as
Page 137 and 138: Cistern, overhead view. Cistern wit
Page 139 and 140: Guidelines for tree planting near u
Page 141 and 142: Installation of permeable pavers. P
Page 143 and 144: Volunteer installation of a parking
Page 145: Luminaires with various cutoff angl
Page 149 and 150: Accessible sidewalks with frequent
Page 151: Art, water, and landscaping work to
Page 154 and 155: VEGETATION OF THE COASTAL PRAIRIE P
Page 156 and 157: Asclepias viridifl ora GREEN MILKWE
Page 158 and 159: Solidago sempervirens SEASIDE GOLDE
Page 160 and 161: Among the woody vines were: Ampelop
Page 162 and 163: Quercus nutt allii NUTTALL’S OAK
Page 165 and 166: APPENDIX C - BIKEWAY PLANS Appendix
Page 167 and 168: KENNINGS RD BARBERS HILL RD SH 330
Page 169: SAN JACINTO TEXAS HISTORIC DISTRICT
Page 172 and 173: Tools to consider for the San Jacin
Page 174 and 175: Regulatory Tools Regulatory Tools P
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design elements - San Jacinto Texas Historic District

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