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HomeMy WebLinkAboutExhibitDRAFT Residential Street Speed Limit Reduction Study Miami, Florida Kimley»Horn © 2017 Kimley-Horn and Associates, Inc. May 2017 042258129 Speed Limit Reduction Study for Submittal to Miami -Dade County Residential Street Speed Limit Reduction Study Miami, Florida Prepared for: City of Miami, Florida Prepared by: Kimley-Horn and Associates, Inc. Kimley>>» Horn ©2017 Kimley-Horn and Associates, Inc. May 2017 042258029 Adrian K. Dabkowski, P.E., PTOE Florida Registration Number 78828 Kimley-Horn and Associates, Inc. 600 North Pine Island Road, Suite 450 Plantation, Florida 33324 CA # 00000696 Kirnley>»Horn Residential Street Speed Limit Reduction Study EXECUTIVE SUMMARY A neighborhood speed limit study was completed to evaluate speed limits and travel speeds for residential streets in 29 neighborhoods within in the City of Miami. The study area encompasses the City of Miami limits, generally bounded by NE 87th Street to the north, North Prospect Drive to the south, Biscayne Bay to the east, and NW 17th Avenue/NW 27th Avenue/Blue Lagoon Canal/SW 37th Avenue/SW 42nd Avenue to the west. Please note that Downtown, Park West, Virginia Key, and Dodge Island neighborhoods are not included in this analysis as they lack sufficient single-family homes and local residential roadways. Furthermore, the gated Bay Point neighborhood was excluded from the analysis as its roadways are not maintained by the City of Miami Department of Public Works nor the Miami -Dade County Department of Transportation and Public Works. Continuous 24-hour weekday (Tuesday, Wednesday, or Thursday) roadway volumes, speed classifications, and 10-mph pace data were gathered or collected within the City at 386 locations. The data analysis of city-wide data considering the average 85' percentile speed and average 10 mph pace for all study neighborhoods indicates that the residential neighborhoods within the City of Miami meet FDOT criteria for a posted speed limit of 25 mph on a citywide basis for residential streets. The data analysis also determined that three (3) study neighborhoods meet FDOT criteria for a posted speed limit of 20 mph. Based on the results of this study, the City may elect to implement a posted speed limit of 20 mph or 25 mph on a neighborhood -by - neighborhood basis or implement a citywide posted limit of 25 mph on all residential streets within the City of Miami. Based on Miami -Dade County policy, municipalities that choose to reduce speed limits must install and maintain speed limit signs within the city limits, except on county or state roadways. The City of Miami and Miami -Dade County will need to execute an inter -local agreement for the city to maintain the speed limit signs on roadways not maintained by the County. Additionally, speed limit signs will need to be installed on all residential streets that intersect the boundaries of the city, collector, and arterial roadways within the city limits in an effort to make drivers aware of regulatory speeds that differ from FDOT, County, and other municipality maintained roadways. K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page— i May 2017 Kirnley>>»Horn Residential Street Speed Limit Reduction Study TABLE OF CONTENTS Page INTRODUCTION 1 DATA COLLECTION 4 DATA ANALYSIS 5 CONCLUSIONS 9 LIST OF FIGURES Page Figure 1: Study Neighborhoods 3 Figure 2: Neighborhoods Satisfying 20 MPH Posted Speed Limit Criteria 7 Figure 3: Neighborhoods Satisfying 25 MPH Posted Speed Limit Criteria 8 LIST OF TABLES Page Table 1: Average Speed and Pace Results by Neighborhood 6 APPENDIX A: APPENDIX B: APPENDIX C: LIST OF APPENDICES Methodology Correspondence Data Collection Data Analysis K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page—ii May 2017 Kimley>»Horn Residential Street Speed Limit Reduction Study INTRODUCTION A neighborhood speed limit study was completed to evaluate speed limits and travel speeds for residential streets in 29 neighborhoods within the City of Miami. The study area encompasses the City of Miami limits, generally bounded by NE 87th Street to the north, North Prospect Drive to the south, Biscayne Bay to the east, and NW 17th Avenue/NW 27th Avenue/Blue Lagoon Canal/SW 37' Avenue/SW 42' Avenue to the west as shown in Figure 1. The neighborhoods evaluated as part of this study are summarized below: 1) Little River 2) Shorecrest 3) Belle Meade 4) Bayside 5) Morningside 6) Little Haiti 7) Liberty City 8) Lummus Park 9) Design District 10) Allapattah 11) Wynwood 12) Edgewater 13) Civic Center 14) Overtown 15) Venetian Islands 16) Flagami 17) West Flagler 18) Little Havana 19) Riverside 20) Shenandoah 21) Brickell and Brickell Key 22) Silver Bluff 23) Coconut Grove 24) Grapeland Heights 25) Coral Gate 26) Natoma Manors 27) The Roads 28) Buena Vista 29) Spring Garden Please note that Downtown, Park West, Virginia Key, and Dodge Island neighborhoods are not included in this analysis as they lack sufficient single-family homes and local residential roadways. Furthermore, the gated Bay Point neighborhood was excluded from the analysis as its roadways are private and not maintained by the City of Miami Department of Public Works nor the Miami - Dade County Department of Transportation and Public Works. Existing residential roadway speed limits are generally 30 miles per hour (mph) within the City of Miami. The recommended maximum speed within a municipality is 30 mph per Florida Statutes (FS) 316.189. A municipality may set a maximum speed limit of 20 or 25 mph on local streets following an engineering analysis. Several neighborhoods within the City, including South Coconut Grove (bounded by Loquat Avenue to the north, Battersea Road to the south, Main Highway/Douglas Road/Ingraham Highway to the east, and Le Jeune Road to the west) have previously adopted a 25-mph speed limit. K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page —1 May 2017 Kimley>»Horn Residential Street Speed Limit Reduction Study A neighborhood speed limit study was prepared for submittal to Miami -Dade County Department of Transportation and Public Works — Traffic Services. The purpose of the study is to assess the speeds on residential streets within the City of Miami. The study methodology is consistent with the Miami -Dade County requirements. Methodology correspondence detailing the study requirements is included in Appendix A. This report summarize the data collection, data analysis, and results of the neighborhood speed limit study. K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page — 2 May 2017 Kimley> Horn Residential Street Speed Limit Reduction Study Figure 1: Study Neighborhoods Grepeland Heights West Flagler Little River Liberty City Allapattah Civic Center r..4 Overtown Garden L u3�k?„t. Little Havana Riverside \ I, Shcrecrest lane Mead Coral Gate Shenandoah The Roads Silver Bluff Coconut Grove • Bnckail K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page — 3 May 2017 Kimley>»Horn Residential Street Speed Limit Reduction Study DATA COLLECTION Traffic data was collected and gathered for residential streets within 29 neighborhoods identified for evaluation within the City of Miami. Traffic data was collected at 114 locations and included continuous 24-hour weekday (Tuesday, Wednesday, or Thursday) roadway volumes, speed classifications, and 10-mph pace data. Additionally, roadway volumes and speed classifications previously collected as part of the City's neighborhood traffic calming studies in the Roads, Grapeland Heights, Spring Garden, Natoma Manors, Buena Vista, and Coral Gate neighborhoods (approximately 181 data collection locations) were used to supplement data collection efforts. Furthermore, roadway volumes and speed classifications collected at approximately 91 data collection locations as part of the City of Miami's Transportation Program Support Services were also used to supplement data collection efforts. Please note that the gathered data includes continuous 24-hour weekday (Tuesday, Wednesday, or Thursday) roadway volumes and speed classifications. Data collection locations were selected within each neighborhood along local residential roadways based on proximity to single-family and multi -family residential land uses consistent with the approved study methodology. Detailed traffic data is contained in Appendix B. K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page-4 May 2017 Kimley>»Horn Residential Street Speed Limit Reduction Study DATA ANALYSIS The collected and gathered traffic data was evaluated in accordance with the guidance provided in the Florida Department of Transportation's (FDOT) Speed Zoning for Highway, Roads, and Streets in Florida, 2010. The FDOT guidance indicates that posted speed limits should not differ from the 85' percentile speed or upper limit of the 10 mph pace by more than three (3) mph and it shall not be less than eight (8) mph. 85th Percentile Speed The 85' percentile speed is the speed at which 85 percent (85%) of vehicles travel at or below. The 85' percentile speed was calculated for all collected and gathered speed data. Furthermore, neighborhood -specific and city-wide 85' percentile speeds were also calculated. A summary of the calculated 85' percentile speeds is presented in Table 1. 10 mph Pace The 10 mph pace is the 10 mph band of travel speeds containing the largest number of vehicles collected in the study. The 10 mph pace was calculated for all collected speed data. Neighborhood -specific and city-wide 10 mph pace speeds were also calculated. A summary of the calculated 10 mph pace is presented in Table 1. As Table 1 indicates, the neighborhood -specific 85' percentile speeds range between 21 mph and 33 mph while the 10 mph pace speeds range between 11 mph and 31 mph. Furthermore, the city-wide 85th percentile speed was determined to be 27 mph while the city-wide 10 mph pace speed is between 16 mph and 25 mph. Detailed data analysis summary maps for each neighborhood are contained in Appendix C. The analysis of city-wide data considering the average 85' percentile speed and average 10 mph pace for all study area neighborhoods indicates that the residential neighborhoods within the City of Miami meet FDOT criteria for a posted speed limit of 25 mph on residential streets. The data analysis also determined that three (3) study area neighborhoods meet FDOT criteria for a posted speed limit of 20 mph. Figure 2 illustrates the neighborhoods that meet the FDOT criteria for a posted speed limit of 20 mph and Figure 3 illustrates the neighborhoods that meet the FDOT criteria for a posted speed limit of 25 mph. K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page — 5 May 2017 Kimley>»Horn Residential Street Speed Limit Reduction Study Table 1: Average Speed and Pace Results by Neighborhood for Residential Streets Neighborhood Average 85th Percentile Speed Average 10 mph Pace Meets Conditions for 20 mph Speed Limit? Meets Conditions for 25 mph Speed Limit? Little River 28 14 to 23 No Yes Shorecrest 27 17 to 26 No Yes Belle Meade 27 17 to 26 No Yes Bayside 22 11 to 20 Yes Yes(2) Morningside 24 15 to 24 No Yes Little Haiti 27 17 to 26 No Yes Liberty City 29 19 to 28 No No Lummus Park 27 19 to 28 No Yes Design District 24 14 to 23 No Yes Allapattah 29 19 to 28 No No Wynwood 27 18 to 27 No Yes Edgewater 24 13 to 22 No Yes Civic Center 27 18 to 27 No Yes Overtown 24 15 to 24 No Yes Venetian Islands 21 12 to 21 Yes Yes(2) Flagami 28 17 to 26 No Yes West Flagler 29 19 to 28 No No Little Havana 25 16 to 25 No Yes Riverside 25 16 to 25 No Yes Shenandoah 28 17 to 26 No Yes Brickell 21 12 to 21 Yes Yes(2) Silver Bluff 33 22 to 31 No No Coconut Grove 26 11 to 20 No No Grapeland Heights 29 (1) No No Coral Gate 30 (1) No No Natoma Manors 28 (1) No Yes The Roads 31 (1) No No Buena Vista 32 (1) No No Spring Garden 27 (1) No Yes Citywide 27 16 to 25 No Yes Notes: ili 10 mph pace data not available for gathered data. (2) Location eligible for 25 mph posted speed limit based on eligibility for 20 mph posted speed limit. K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page — 6 May 2017 Kimley»)Horn Residential Street Speed Limit Reduction Study Figure 2: Neighborhoods Satisfying 20 MPH Posted Speed Limit Criteria for Residential Streets Little River Liberty City Design Disidct Flagami Allapattah Dille Havana West Flagler Riverside Coral Gate Silver Bluff Coconut Grove Shenandoah N0Iorna Ma Legend: i■ Neighborhood Satisfies 20 mph Posted Speed Limit Criteria Neighborhood Does Not Satisfy 20 mph Posted Speed Limit Criteria Shorecrest Belie Mead K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page — 7 May 2017 Kimley>>)Horn Residential Street Speed Limit Reduction Study Figure 3: Neighborhoods Satisfying 25 MPH Posted Speed Limit Criteria for Residential Streets Coconut Grove Legend: Neighborhood Satisfies 25 mph Posted Speed Limit Criteria Neighborhood Does Not Satisfy 25 mph Posted Speed Limit Criteria K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page — 8 May 2017 Kimley>»Horn Residential Street Speed Limit Reduction Study CONCLUSIONS A neighborhood speed limit study was completed to evaluate speed limits and travel speeds for residential streets in 29 neighborhoods within in the City of Miami. The study area encompasses the City of Miami limits, generally bounded by NE 87th Street to the north, North Prospect Drive to the south, Biscayne Bay to the east, and NW 17th Avenue/NW 27th Avenue/Blue Lagoon Canal/SW 37th Avenue/SW 42nd Avenue to the west. Please note that Downtown, Park West, Virginia Key, and Dodge Island neighborhoods are not included in this analysis as they lack sufficient single-family homes and local residential roadways. Furthermore, the gated Bay Point neighborhood was excluded from the analysis as its roadways are not maintained by the City of Miami Department of Public Works nor the Miami -Dade County Department of Transportation and Public Works. Continuous 24-hour weekday (Tuesday, Wednesday, or Thursday) roadway volumes, speed classifications, and 10-mph pace data were gathered or collected within the City at 386 locations. The data analysis of city-wide data considering the average 85' percentile speed and average 10 mph pace for all study neighborhoods indicates that the residential neighborhoods within the City of Miami meet FDOT criteria for a posted speed limit of 25 mph on a citywide basis for residential streets. The data analysis also determined that three (3) study neighborhoods meet FDOT criteria for a posted speed limit of 20 mph. Based on the results of this study, the City may elect to implement a posted speed limit of 20 mph or 25 mph on a neighborhood -by - neighborhood basis or implement a citywide posted limit of 25 mph on all residential streets within the City of Miami. Based on Miami -Dade County policy, municipalities that choose to reduce speed limits must install and maintain speed limit signs within the city limits, except on county or state roadways. The City of Miami and Miami -Dade County will need to execute an inter -local agreement for the city to maintain the speed limit signs on roadways not maintained by the County. Additionally, speed limit signs will need to be installed on all residential streets that intersect the boundaries of the city, collector, and arterial roadways within the city limits in an effort to make drivers aware of regulatory speeds that differ from FDOT, County, and other municipality maintained roadways. K:\FTL_TPTO\042258129-WO#29 Residential Speed Reduction\Report\Report.docx Page-9 May 2017