Reference: Laguna Canyon Road Traffic Conditions Data Collection Summary

Transcription

1 Stantec Consulting Services Inc. 38 Technology Drive Suite 100, Irvine CA September 8, 2017 File: Attention: Mark Trestik, Assistant City Engineer City of Beach Department of Public Works 505 Ave Beach, CA Dear Mr. Trestik, Reference: Road Traffic Conditions Data Collection Summary A data collection effort was performed along Road from Road to Avenue/ in the City of Beach. This included weekday and Saturday AM and PM peak period intersection turning movement counts, weekday and weekend average daily traffic (ADT) counts, floating car speed and delay measurements, and queue observations. The data was collected in August 2017 to capture summer traffic patterns. In addition to the typical summer traffic attracted to the beach, this time frame also captured traffic during the Sawdust Art Festival, Art-A-Fair, and Festival of Arts/Pageant of the Masters events located along Road in the City. This letter summarizes the data that was collected. Peak Hour Intersection Counts Turning movement counts were collected at the intersections along Road at Road, Drive, and Avenue/. These counts were collected on one weekday from 7 to 9 AM and 4 to 6 PM and two consecutive Saturdays from 9 AM to 1 PM and 4 to 7 PM in August Figure 1 illustrates the weekday peak hour intersection volumes, and Figures 2 and 3 illustrate the Saturday peak hour volumes collected on August 12 and August 19, respectively (actual count data is attached). Average Daily Traffic Volumes Daily roadway volumes were collected over a seven-day period at two locations along Road one south of Road and one north of Avenue/. The weekday average volume south of Road is 41,200 ADT and north of Avenue/ is 40,200 ADT. The Saturday volume is 41,900 ADT south of Road and 40,800 ADT north of Avenue/.

2 September 8, 2017 Mark Trestik, Assistant City Engineer Page 2 of 4 Reference: Road Traffic Conditions Data Collection Summary Travel Time, Speed, and Delay The floating car method was used to measure travel times, speed, and delay along Road. With this method, a data collection vehicle travels along the route with the flow of traffic, and, using GPS technology, makes measurements that can be tracked along the driven route. These measurements were collected on a weekday from 7 to 9 AM and 4 to 6 PM and on a Saturday from 9 AM to 1 PM and 4 PM to 7 PM. The travel time, speed, and delay data is attached. Queue Observations Stantec staff drove the section of Road between Road and Avenue/ during the weekday and Saturday peak periods to observe the formation of queues in the field. The weekday observations were made on Tuesday August 15, 2017 from 8 to 9 AM and from 4 to 4:45 PM. Saturday observations were made on August 19, 2017 from 8:50 to 9:45 AM (notes of the observations are attached). Weekday Southbound Weekday observations during the AM peak period showed minor congestion and minimal queues in the southbound direction between Road and Avenue/. A slow truck had vehicles traveling at less than 30 mph along one stretch southbound, and vehicles were temporarily slowed to a stop approaching the Pedestrian Crossing signal after its activation. However, for the most part during the AM peak, the southbound direction did not experience noticeable queuing. Similarly, during the PM peak, the southbound direction slowed approaching the Willow Trail parking lot due to vehicles slowing to enter the parking lot and came to a stop and slowly passed the Pedestrian Crossing HAWK signal after a signal activation, but overall did not experience significant queuing. Weekday Northbound Weekday northbound observations during the AM peak period revealed no significant queuing, only minor slowing of traffic approaching Drive, either due to a red phase at the signal or the merge from two lanes to one after the intersection, or the Pedestrian Crossing HAWK signal if the signal was activated to stop through traffic on Road. Traffic came to a stop in one instance near Sun Valley Drive, but the cause was not apparent, and traffic resumed speeds above 30 mph. Traffic stopped at the Road signal, but the northbound queues at the intersection were short and cleared quickly. During the PM peak period, northbound traffic was slowed or stopped more frequently due to increased activity on the side streets and driveways; however, sustained queues were not observed. Traffic slowed or stopped approaching Drive and continued slowly until after the merge north of the intersection. Traffic again stopped for the Pedestrian Crossing signal. Minor slowing occurred where vehicles turned into or out of driveways.

3 September 8, 2017 Mark Trestik, Assistant City Engineer Page 3 of 4 Reference: Road Traffic Conditions Data Collection Summary Saturday Southbound Saturday observations during the early AM period showed that minor congestion occurred southbound at Road where two through lanes merge into one lane approximately 300 feet south of the intersection, but once vehicles were past the merge point, they flowed at 40 mph or more. Later in the morning (9:21 AM), congestion worsened considerably at the merge south of El Toro Road to the point of queuing past the Road intersection. This congestion blocked southbound vehicles from entering the intersection even though the signal showed a green phase. Other locations where southbound traffic slowed down to 30 mph or less occurred when vehicles were entering or exiting a parking lot or approaching the Drive signal after the signal stopped through traffic on Road; however, these slowdowns did not result in sustained queues and cleared up as the vehicles passed the location. No queues were observed approaching Avenue. Saturday Northbound Northbound traffic flowed freely from Avenue to Road during the Saturday AM period, except for very minor slowing at the merge north of Drive. No queues were observed in the northbound direction. The general observation was that traffic flow slows or stops approaching locations with a signal after the signal is activated, approaching the merge areas, or when a vehicle slows to enter a driveway, but these slowdowns were temporary and the traffic resumed 40 to 45 mph speeds or more after passing the event. The only time significant congestion was observed occurred late Saturday morning south of Road where two lanes merge into one lane, which affected southbound traffic on Road north of the intersection. If you have any questions, please contact me. Sincerely, STANTEC CONSULTING SERVICES INC. Cathy Lawrence, PE Transportation Engineer Phone: (949) Cathy.Lawrence@stantec.com

4 September 8, 2017 Mark Trestik, Assistant City Engineer Page 4 of 4 Reference: Road Traffic Conditions Data Collection Summary Attachment: Figure 1 Weekday Peak Hour Volumes Figure 2 Saturday ( ) Peak Hour Volumes Figure 3 Saturday ( ) Peak Hour Volumes Queue Observation Notes Count Data c. Keith Rutherford, Stantec cl v:\2073\active\ \correspondence\letters\laguna_cyn_rd-data_collection\let-lag_cyn_rd_data_collection_summary docx

5 v:\2073\active\ \drawing\exhibit_files\laguna_canyon_rd-aug2017\laguna_cyn_rd-pk_hr_vols.dwg Figure 1 Weekday Peak Hour Volumes AM Peak Hour PM Peak Hour (7-9 AM) 1 (4-6 PM) 1. & 2. & 3. & / N 1. & 2. & 2 3. & / 3 A.1

6 v:\2073\active\ \drawing\exhibit_files\laguna_canyon_rd-aug2017\laguna_cyn_rd-pk_hr_vols.dwg Figure 2 Saturday ( ) Peak Hour Volumes 1. & 2. & 3. & / N 1. & 2. & 3. & / Mid-Day Peak Hour PM Peak Hour (9 AM - 1 PM) 1 (4-7 PM) 2 3 A.2

7 v:\2073\active\ \drawing\exhibit_files\laguna_canyon_rd-aug2017\laguna_cyn_rd-pk_hr_vols.dwg Figure 3 Saturday ( ) Peak Hour Volumes 1. & 2. & 3. & / N 1. & 2. & 3. & / Mid-Day Peak Hour PM Peak Hour (9 AM - 1 PM) 1 (4-7 PM) 2 3 A.3

8 Monday 8/14/17 LAGUNA CANYON RD - ADT VOLUME SUMMARY Tuesday 8/15/17 Wednesday 8/16/17 Thursday 8/17/17 Friday 8/11/17 Weekday Average Saturday 8/12/17 Sunday 8/13/17 Rd South of Rd NB 19,837 19,722 20,182 20,537 21,557 20,400 20,989 19,798 SB 20,022 20,028 20,746 21,198 21,959 20,800 20,934 18,640 Total 39,859 39,750 40,928 41,735 43,516 41,200 41,923 38,438 North of Dr NB 19,080 19,124 19,410 19,830 20,729 19,600 20,033 18,617 SB 19,781 19,750 20,402 21,031 21,767 20,500 20,814 18,309 Total 38,861 38,874 39,812 40,861 42,496 40,200 40,847 36,926 A.4

9 Road Rd to Ave/ Tuesday, August 15, 2017 Southbound 8:00 AM Rd signal no queue No stop/slowdown 40+ mph Ave signal no queue Northbound 8:15 AM Ave signal no queue Merge north of Dr slow to 30 mph Rd signal no queue Southbound 8:36 AM Rd signal no queue Willow Trail parking lot to Big Bend Trail parking lot slow to 30 mph (slow garbage truck) Left turn at Club Big Bend Trail parking lot stopped, 20 mph to Pedestrian Crossing HAWK signal Resume 40+ mph past Pedestrian Crossing HAWK signal Ave signal minor queue in left-turn lane Northbound 8:45 AM Ave signal no queue Merge north of Dr slow Pedestrian Crossing HAWK signal slow approaching, resume 40+ mph after Sun Valley Dr stop, resume 30+ mph Rd signal minor queue, cleared Note: Construction on northbound Road north of SR-73 NB off-ramp (closed to one lane) during AM observations. Southbound 3:55 PM Rd no queue No stopping/slowing 40+ mph Ave signal no queue Northbound 4:05 PM Ave signal minor queue, cleared Dr mph through merge north of intersection Left turn from side driveway Pedestrian Crossing HAWK signal stop, 45 mph past signal Dog Park vicinity stop, mph to Rd Rd signal short queue, no delay A.5

10 Southbound 4:20 PM Rd signal no queue Willow Trail parking lot mph to Dog Park Stan Oaks St stop, 20 mph Pedestrian Crossing HAWK signal mph Resume 40+ mph Ave signal no queue Northbound 4:31 PM Ave signal no queue Dr signal stopped, 0 20 mph past merge Pedestrian Crossing HAWK signal stop Resume 40+ mph Rd signal short queue A.6

11 Road Rd to Ave/ Saturdayday, August 19, 2017 Southbound 8:49 AM Raquel Rd slight slowing Big Bend Trail parking lot work truck on shoulder No slowing/stopping Ave 8:54 AM Northbound 8:55 AM Merge north of Dr minimal slowing at merge No slowing/stopping Rd signal stopped, no queue Southbound 9:05 AM Rd signal no queue Dr signal stopped for signal Ave signal no queue Northbound 9:13 AM Ave signal no queue Rd signal stopped, no queue, 9:18 AM Southbound 9:21 AM Rd stopped, queue (2 signal cycles to pass through intersection, no backup on WB Rd), passed intersection 9:24 AM Merge south of Rd congestion blocks vehicles at intersection, mph to Willow Trail parking lot Willow Trail parking lot 30 mph Ave stopped, 9:29 AM Northbound 9:30 AM Ave signal Dr signal stopped Rd signal no queue, 9:36 AM Note: Farmers Market open during observations, but no issues A.7

12 Southbound at Road Signal Northbound at Road showing southbound congestion at merge Southbound at Pedestrian Crossing HAWK signal Southbound at Drive signal Southbound at City Parking Lot 11 signal Northbound north of City Parking Lot 11 signal A.8