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TC - Item 3A - Traffic Review of Rio Hondo Avenue at Rose StreetTRANSTECM TO: Traffic Committee FROM: Traffic Engineering, Transtech Engineers, Inc. DATE: March 2otl, 2023 SUBJECT: TRAFFIC REVIEW OF RIO HONDO AVENUE AT ROSE STREET INTRODUCFION/BACKGROUND The City of Rosemead has received a resident request to review reported speeding along Rio Hondo Avenue. The resident is concerned about vehicles traveling above the speed limit along Rio Hondo Avenue and requested an all way stop at Rio Hondo Avenue and Rose Street, or for other traffic calming measures to be installed at Rose Street. In response to this request and on behalf of the City, engineering staff has completed a traffic review of this road segment. The traffic review included an analysis of the existing roadway conditions, a review of approximately 3 -years of available collision data, an average daily traffic count (ADT), and 24-hour speed survey along Rio Hondo Avenue. CITY OF ROSEMEAD Op E D Prepared BY Transtech Engineers, Inc. I Page 1 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST EXISTING CONDITIONS Figure 2: Existing Conditions: Rio Hondo Avenue at Rose Street IN +i r 4 — PARKING C bi _1 10 aniHare �• qW q i' LEGEND 1 % NOTA Not a Through PARKING No Parking Time Sign Stop Sign (R1-1) THROUGH Street Sign (non- TUESDAY (R-30) Variations STREET conforming) 10ari_2am STREET SWUNG SEC 1RN.N0 CMC Rio Hondo Avenue: Within the City of Rosemead, Rio Hondo Avenue is a north/south road that is considered a local road, based upon the California Road System by Cal Trans. Rio Hondo Avenue has a prima facie speed limit of 25 MPH, and is approximately 40 -feet wide with one lane in each direction. Parking is allowed on both sides along the street except on Tuesday, 10AM to 2PM for street sweeping. Along Rio Hondo Ave, there are single-family residential houses on both sides. Rose Street: Within the City of Rosemead, Rose Street is an east/west street that is considered a local road, based upon the California Road System by Cal Trans. Rose Street has a prima facie speed limit of 25 MPH, and is approximately 40 -feet wide with one lane in each direction. Parking is allowed along both sides of Rose Street, except Tuesday, 10AM to 2PM for street sweeping. Along Rose St, there is Cul - De -Sac to the east and residential houses on both sides to the west of the intersection with Rio Hondo Avenue. 1 Cos-leAD roeay span mw�nmeam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 2 of 13 PICTURE SUMMARY 4w TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST 1 OSE EAD roeay span mw�nmeam STOP= ", R�Z6 Rio Hondo Ave •• M • Im Intersection of Rio Hondo Avenue and Rose Street — Looking Southbound CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 3 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST :�I�7��9[�7►�I►DI�i�[�1e��[�7► Collision data was obtained from the computerized collision records system maintained by the State of California called the Statewide Integrated Traffic Records Systems (SWITRS). A review of available collisions that were reported to SW ITRS at the intersection of Rio Hondo Avenue at Rose Street was conducted over approximately a 3 -year period between December 2019 through December 2022 (available data at the time of traffic review). Based on the information provided, a summary breakdown of the number of collisions within the studied segment are listed below and shown in Table 1. 2022 — 0 collisions 2021— 0 collisions 2020 —1 collisions 2019 — 0 collisions Total Collisions: 1 Table 1: Collision Table, Rio Hondo Avenue at Rose Street Figure 3: Collision Diagram, Rio Hondo Avenue at Rose Street , - a m rn . �� •_ 7 p. tjl g LEGEND Severe Injury 0 Injury- Other Visible 0 Injury- Complaint of Pain � Severity ty Damage Only � Propertj 1 Total 1 1- Fatal 2- Severe Injury 1 3 - Other Visible Motor Vehicle, ID# Date Primary Road Secondary Road Dist. Time DaV of the Week Lighting (Day Collision TYPe Injury Pedestrian, Collison Factor andEColhmon #Inl Night, Etc.) 9 -Complaint of Bicycle Involved Detail Descriptions Pain 5 - Prop Dam Only F FT (PDO) 1 1/5/2020 RIO HONDO AVE ROSIEST 0. 1119 SUN DAYLIGHT BROADSIDE 5 OTHERMV NB IFT VEH HIT NB IMPROPTURN 0 THROUGH WH Figure 3: Collision Diagram, Rio Hondo Avenue at Rose Street , - a m rn . �� •_ 7 p. tjl g LEGEND Severe Injury 0 Injury- Other Visible 0 Injury- Complaint of Pain � 0 ty Damage Only � Propertj 1 Total 1 TOTAL CRASHES 1 Cos-leAD roeay span mwn nmeam ALL COLLISIONS -Crash Type (nion-aed a Bike coll : on:/aa:ne:) r # of Crashes Fatality (Death) � 0 Severe Injury 0 Injury- Other Visible 0 Injury- Complaint of Pain � 0 ty Damage Only � Propertj 1 Total 1 PED &BIKE -Crash Type ri of Crashes Fatality (Death) 0 Severe Injury 0 Injury- Other Visible 0 Injury- Complaint of Pain 0 Property Damage Only 0 Total 0 CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 4 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST AVERAGE DAILY TRAFFIC (ADT) Average Daily Traffic (ADT) data was obtained from counts taken on December 6th, 2022, for Rio Hondo Avenue and Rose Street. All counts were taken when schools were open and back in session. A summary of ADT data is shown below in Table 2: Average Daily Traffic (ADT). The ADT summary is attached (Attachment 1A & 1B) at the end of the report. Table 2: Average Daily Traffic (ADT): 12/06/2022 Vehicles per Day (vpd) Location Northbound Southbound TOTAL Rio Hondo Road N/O Rose Street 669 421 1,090 GDPPn GI ID%1PV To assess the speed at which vehicles were traveling along Rio Hondo Avenue at Rose Street, speed samples were taken over a 24-hour period on December 6th, 2022. Based on the Speed Survey, the 85th percentile speed of vehicles along Rio Hondo Avenue and Rose Street was determined to be 34 mph. This translates to mean that 85 percent of the vehicles sampled were traveling at 34 mph or below, which is slightly above the prima facie speed limit of 25 mph. Table 3 below shows the December 6th, 2022, speed survey results. The speed summary is attached (Attachment 2A & 2B) at the end of the report. ble 3: 24 Hour Speed Survey on Rio Hondo Road N/O Rose Street Location Rio Hondo Road N/O Street 1 Cos-leAD roeay span mw�nmeam Wle Speed 34 Prima Facie Speed Limit MPH CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 5 of 13 Dir. of Date/Time of 8' Travel Survey Rose 12/06/22 NB/SB 24-hour Wle Speed 34 Prima Facie Speed Limit MPH CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 5 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST TRAFFIC CALMING DEVICES AND STRATEGIES Traffic calming is the process of reducing vehicle speeds using both passive devices, such as signs and striping, and physical devices such as changes in road elevation or path. As part of this study, traffic speeds, collisions and traffic volumes were used to assess existing conditions along this segment. The type, design and placement of traffic calming devices depend upon the road classification, desired traffic speed and types of traffic issues at the intersection of Rio Hondo Avenue and Rose Avenue. There are various traffic calming measures that can reduce the flow and speed of traffic on a street. The following is a list of common traffic calming measures that can be installed to aid in slowing traffic 1) Traffic Education Campaign: This consists of flyers, neighborhood meetings, banners and other notices to assist is making the public aware of the traffic conditions in a certain area. 2) Signage and Pavement Legends: Modifying the signage along the road or change the striping to narrow travel lanes to effectively slows speeds by changing the travel environment. Signs alert the Driver to their speed, such as larger speed limit signs or a speed feedback sign. Too many signs can have an opposite effect on traffic. Therefore, usage of signs should be subject to careful consideration and compliance with local and regional standards. 3) Targeted Police Enforcement: The police department deploys officers to perform enforcement on residential streets for at least an hour a day. 1 Cos-leAD roeay span mw�nmeam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 6 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST ALL -WAY STOP CONTROL CRITERIA FOR DETERMINING IF STOP CONTROL IS WARRANTED Traffic control devices work in concert with the basic "rules of the road" contained in traffic laws and ordinances. The California Manual of Uniform Traffic Devices (CAMUTCD) describes applications, warrants, and placement of STOP signs (R1-1). The STOP sign is a regulatory device that is used when traffic is required to stop. STOP signs are used to assign right-of-way at an intersection. Multi -way control is used where the volume of traffic on the intersecting roads is approximately equal. Stop signs are not used as a speed control device. Since a STOP sign causes inconvenience to motorists, it should be used only where warranted. The placement of these signs is dictated by engineering judgment and based on guidelines found in the CAMUTCD and CVC. The City's criteria for determining if two-way or all -way stop control is warranted is based on several factors as set by the CAMUTCD. These factors include minimum volumes on each of the street approaches, collision investigation, speed of traffic, number of pedestrians and potential sight obstructions. As shown in the peak hour intersection count and pedestrian counts this location would not exceed minimum thresholds in volume and would not be a candidate for all -way stop control. All -Way Stop Installation The following briefly outlines the Criteria for the installation of All -Way stop warrants. The placement of All -Way stop control is warranted when' minimum volume thresholds are exceeded: A. Traffic control signals are justified B. A crash problem exists as indicated by 5 or more collisions in a 12 -month period C. Minimum Volumes are met if: 1. Volume entering intersection from the major approach (total of both approaches) averages 300 vehicles per hour for any 8 hours of an average day. And 2. The combined vehicle, pedestrian and bicycle volumes entering the intersection from the minor street approaches averages at least 200 units per hour for the same 8 hours. 3. If the 85th percentile approach speed of the major street exceeds 40 mph the minimum volumes are 70 percent of the above values. ' California Manual of Uniform Traffic Control Devices, Section 28.07 Multiway Stop Applications CITY OF ROSEMEAD OC c EMi��Prepared By: Transtech Engineers, Inc. I Page 7 of 13 J ,11m 1rowsn ft. TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST The following Table 4 summarizes traffic during the highest 8 peak hours of the day on both streets. Table 4: Summary of Peak Hour Vehicular and Pedestrian Volume to Meet Minimum Thresholds for All -Way Stop Control Time (highest Northbound and Met Northbound and Met Minimum Threshold of at 8 hours Southbound Minimum Southbound Least 200 Units Per Hour (NB +SB + including Traffic on Rio Threshold of Pedestrians and Peds + Bikes) school hours) Hondo Road 300 Veh Per Bicycles crossing Rio (Not Stop Hour for any Hondo Avenue Controlled Street 8 Hours of an for NB/SB Traffic) Average Day? 07:00-08:00 63 N N 08:00-09:00 72 N N 13:00-14:00 61 N N 14:00-15:00 68 N N 15:00-16:00 94 N N 16:00-17:00 106 N N 17:00-18:00 127 N N 18:00-19:00 125 N N Cos-leAD roeay span mw�nmeam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 8 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST RECOMMENDATIONS After a thorough review of existing field and traffic conditions and per the California Manual on Uniform Traffic Control Devices (CAMUTCD), California Vehicle Code (CVC), based on the traffic review and engineering judgement, it was determined that the intersection of Rio Hondo Ave at Rose Street does not meet the warrants for an All Way Stop installation at Rio Hondo Avenue and Rose Street. However, it was determined that the intersection would benefit from installation of speed limit signs along Rio Hondo Avenue. The improvements are listed below and shown on Figure 4. 1. NEW SPEED LIMIT SIGNAGE: Install New 25 MPH speed limit (R2-1) signs (30"x36") Along with 25 Pavement Legends for both directions of travel along Rio Hondo Avenue as shown in the Installation Exhibit and as follows: a. Install 25 MPH Speed Limit sign and legend should be installed on the eastside of Rio Hondo Avenue, approximately 320 -feet north of Rose Street for SPEED LIMIT southbound vehicles along Rio Hondo Avenue. b. Install 25 MPH Speed Limit sign and legend should be installed on the westside 25 of Rio Hondo Avenue, approximately 400 -feet south of Rose Street for northbound vehicles along Rio Hondo Avenue. Speed Limit (112-1) Sign 2. REPAINT STOP LEGEND: Repaint STOP Legend for existing stop signs on Rose Street as shown in the Installation Exhibit. a. Refresh existing "STOP" Pavement legend for eastbound and westbound traffic along Rose Street at Rio Hondo Avenue. 1+ Cos-leAD roeays smau mw�n��eam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 9 of 13 INSTALLATION EXHIBIT: ROSEMEAD, CA — RIO HONDO AVENUE AT ROSE STREET Date Prepared: 2-21-2023 OINSTALL 25 MPH SPEED LIMIT (R2-1) SIGNS (30"X36") ALONG WITH 25 PAVEMENT LEGENDS FOR BOTH DIRECTIONS OF TRAVEL ALONG RIO HONDO AVENUE. INSTALL SIGNAGE APPROXIMATELY 320 -FEET NORTH OF ROSE STREET FOR SOUTHBOUND VEHICLES ALONG RIO HONDO AVENUE, AND APPROXIMATELY 400 -FEET SOUTH OF ROSE STREET FOR NORTHBOUND VEHICLES ALONG RIO HONDO AVENUE. SEE DETAIL 1. OREFRESH EXISTING STOP BAR AND "STOP" PAVEMENT LEGEND FOR EASTBOUND AND WESTBOUND TRAFFIC ALONG ROSE STREET AT RIO HONDO AVENUE. SPEED LIMIT 25 CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 10 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST ATTACHMENTS 1. Average Daily Vehicle Count (ADT): Rio Hondo Avenue N/O Rose Street 2. 24-hour Speed Survey: Rio Hondo Avenue N/O Rose Street 1 Cos-leAD roeay span mw�nmeam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 11 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST Attachment 1: Average Daily Vehicle Count (ADT): Rio Hondo Avenue N/O Rose Street Cos-leAD roeay span mw�nmeam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 12 of 13 Prep aretl by National Data S Sur A.g Services VOLUME Rio Hondo Ave N/O Rose St Day: Tuesday City: Rosemead Date: 12/6/2022 Project#: CA22_020384_001 t•t t r 00:00 0 0 0 0 12:00 10 7 0 0 17 00:15 2 1 0 03 12:15 4 8 0 0 12 00:30 2 0 0 0 2 12:30 5 9 0 0 14 00:45 1 5 r 1 2 r 0 r 0 2 7 12:45 5 24 r 5 29 r 0 r 0 10 53 01:00 0 0 0 0 13:00 10 5 0 0 15 01:15 0 1 0 0 1 13:15 8 9 0 0 17 01:30 0 1 0 0 1 13:30 11 7 0 0 18 01:45 1 1 0 2 r 0 0 1 3 13:45 10 39 r 1 22 0 r 0 11 61 02:00 0 0 0 0 14:00 8 10 0 0 18 02:15 1 1 0 0 2 14:15 7 8 0 0 15 02:30 0 2 0 0 2 14:30 11 7 0 0 18 02:45 0 1 1 4 0 0 1 5 14:45 11 37 6 31 0 0 17 68 03:00 1 1 0 0 2 15:00 16 6 0 0 22 03:15 0 0 0 0 15:15 13 14 0 0 27 03:30 1 0 0 0 1 15:30 14 10 0 0 24 03:45 0 2 r 0 1 r 0 r 0 3 15:45 18 61 r 3 33 r 0 r 0 21 94 04:00 1 1 0 0 2 16:00 16 4 0 0 20 04:15 0 2 0 0 2 16:15 23 6 0 0 29 04:30 0 1 0 0 1 16:30 27 7 0 0 34 04:45 1 2 r 0 4 r 0 r 0 1 6 16:45 19 85 r 4 21 0 r 0 23 106 05:00 0 3 0 0 3 17:00 21 8 0 0 29 05:15 2 1 0 0 3 17:15 16 13 0 0 29 05:30 0 0 0 0 17:30 19 9 0 0 28 05:45 1 3 1 5 r 0 1 0 2 8 17:45 29 85 r 12 42 0 r 0 41 127 06:00 1 1 0 0 2 18:00 25 7 0 0 32 06:15 0 1 0 0 1 18:15 27 7 0 0 34 06:30 4 8 0 0 12 18:30 24 7 0 0 31 06:45 1 6 r 5 15 r 0 r 0 6 21 18:45 1 20 96 r 8 29 r 0 r 0 28 125 07:00 2 6 0 0 8 19:00 6 6 0 0 12 07:15 6 10 0 0 16 19:15 10 2 0 0 12 07:30 5 12 0 0 17 19:30 4 3 0 0 7 07:45 11 24 r 11 39 r 0 r 0 22 63 19:45 7 27 r 7 18 r 0 r 0 14 45 08:00 10 20 0 0 30 20:00 6 6 0 0 12 08:15 9 12 0 0 21 20:15 8 3 0 0 11 08:30 5 8 0 0 13 20:30 8 5 0 0 13 08:45 5 29 r 3 43 r 0 r 0 8 72 20:45 9 31 r 2 16 0 r 0 11 47 09:00 6 1 0 0 7 21:00 6 1 0 0 7 09:15 3 7 0 0 10 21:15 4 2 0 0 6 09:30 4 5 0 0 9 21:30 3 2 0 0 5 09:45 11 24 6 19 r 0 0 17 43 21:45 2 15 r 1 6 0 r 0 3 21 10:00 8 8 0 0 16 22:00 3 0 0 0 3 10:15 7 4 0 0 11 22:15 1 0 0 0 1 10:30 4 2 0 0 6 22:30 3 0 0 0 3 10:45 4 23 1 15 0 0 5 38 22:45 1 4 11 1 1 0 0 5 12 11:00 6 6 0 0 12 23:00 0 0 0 0 11:15 6 5 0 0 11 23:15 1 1 0 0 2 11:30 8 7 0 0 15 23:30 2 0 0 0 2 11:45 14 34 5 23 0 0 19 57 23:45 1 4 0 1 0 0 1 5 TOTALS 154 172 326 TOTALS 515 249 764 SPLIT% 47.2% 52.8% 29.9% SPLIT% 67.4% 32.6% 70.1% NB SBLTotal 669 421 1,090 AM Peak Hour 1115 0730 07:30 PM Peak Hour 1745 1700 17:45 AM Pk Volume 38 55 90 PM Pk Volume 105 42 138 Pk Hr Factor 0.679 0.688 0.750 Pk Hr Factor 0.905 0.808 0.841 7-9 Volume 53 82 135 4-6 Volume 170 63 233 7-9 Peak Hour 0730 0730 07:30 4-6Peak Hour 16:15 1700 17:00 7-9Pk Volume 35 55 90 1 _a 90 42 127 Pk Hr Factor 0.795 0.688 0.750 Pk Hr Factor 0.833 0.808 0.774 Cos-leAD roeay span mw�nmeam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. I Page 12 of 13 TRAFFIC REVIEW ALONG RIO HONDO AVE AT ROSE ST Attachment 2: 24-hour Speed Survey: Rio Hondo Avenue N/O Rose Street P r9 SPEED Rio Hondo Ave N/0 Rose St Day: Tuesday City: Rosemead Date: 12/6/2022 Project M: CA22_020384_001 Summary t 00:00 AM 0 0 0 0 5 2 0 0 0 0 0 0 0 7 01:00 0 0 0 0 2 0 1 0 0 0 0 0 0 3 02:00 0 1 0 1 2 1 0 0 0 0 0 0 0 5 03:00 0 1 2 0 0 0 0 0 0 0 0 0 0 3 04:00 1 1 1 1 1 1 0 0 0 0 0 0 0 6 05:00 0 0 1 3 1 3 0 0 0 0 0 0 0 8 06:00 2 1 3 11 3 1 0 0 0 0 0 0 0 21 07:00 4 8 16 16 17 2 0 0 0 0 0 0 0 63 08:00 3 11 15 22 15 5 0 1 0 0 0 0 0 72 09:00 1 3 5 12 15 4 3 0 0 0 0 0 0 43 10:00 1 6 4 9 14 2 1 1 0 0 0 0 0 38 11:00 7 7 12 14 14 1 1 1 0 0 0 0 0 57 12:00 PM 7 6 17 9 10 4 0 0 0 0 0 0 0 53 13:00 4 4 16 16 15 4 2 0 0 0 0 0 0 61 14:00 0 6 19 18 17 4 2 2 0 0 0 0 0 68 15:00 3 9 19 22 20 15 6 0 0 0 0 0 0 94 16:00 2 5 15 34 31 14 4 1 0 0 0 0 0 106 17:00 2 12 39 38 32 3 1 0 0 0 0 0 0 127 18:00 6 13 22 49 25 9 1 0 0 0 0 0 0 125 19:00 0 4 12 17 8 4 0 0 0 0 0 0 0 45 20:00 1 4 17 15 6 2 2 0 0 0 0 0 0 47 21:00 1 04 4 9 2 1 0 0 0 0 0 0 21 22:00 0 1 5 1 3 1 1 0 0 0 0 0 0 12 23:00 0 1 1 1 1 0 1 0 0 0 0 0 0 5 %of Totals MENE 4% 111011T 10% 22% 29% 24% 8% 2% 1% 1 0% AM Volumes 19 39 59 89 89 22 6 3 0 0 0 0 0 326 %AM 2% 4% 5% 8% 8% 2% 1% 0% 30% AM Peak Hour 11:00 0800 0700 0800 0700 0800 0900 0800 0800 Volume ] 11 16 22 17 5 3 1 ]2 PM Volumes 26 65 186 224 1]] 62 21 3 0 0 0 0 0 764 %PM 2% 6% 17% 21% 16% 6% 2% 0% 70% PM Peak Hour 12:00 1800 1700 1800 1700 1500 1500 1400 1700 Volume ] 13 39 49 32 15 6 2 127 Directional Peak PeriodsAM 7-9 NOON 12-2 PM 4-6 Off Peak Volumes All Speed s volume % volume % volume % volume % 135 12% 114 10% 233 21% 608 56% 15th 50th Average 85th 95th ADT Rio Hondo Ave I Summary 1 20 1 27 1 27 1 34 1 39 1 1090 Cos-leAD roeay span mwn nmeam CITY OF ROSEMEAD Prepared By: Transtech Engineers, Inc. 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