Traffic Study
Cabelas Drive and Old San Antonio Road
Traffic Study Prepared by HDR Engineering, Inc. 504 Lavaca St, # 1175, Austin, TX 78701 May 3, 2016
Study Purpose 1. Existing conditions and traffic operations 2. Data collection 3. Analysis assumptions and methodology 4. Traffic signal, all-way stop warrant, intersection sight distance, stopping sight distance analysis and accident data findings 5. Recommendations based on study findings 6. Implementation of improvements 7. Conclusions
Existing Conditions Existing intersection conditions
Apt Dwy.
Cabelas Dr.
Old San Antonio Rd.
Roadway speeds are 35 mph
Data Collections 1. 24-hour approach counts collected December 10, 2015 2. Turning movement counts collected December 10 and 12, 2015 • • •
Weekday (Thursday) AM Peak Period – 7:00 – 9:00 AM Weekday (Thursday) PM Peak Period – 4:00 – 6:00 PM Weekend (Saturday) Peak Period – 1:00 – 3:00 PM
3. Field review of existing geometrics and traffic operations performed December 17, 2015 4. Field evaluation of intersection sight distance and stopping sight distance performed March 16, 2016 5. Data obtained from TxDOT motor vehicle crash database for reported crashes from December 1, 2013 through November 30, 2015 6. 2013 – 2015 Accident reports obtained from City of Buda Police Dept.
Analysis Assumptions & Methodology •
Existing (Year 2015) traffic volumes utilized to complete study
•
Intersection capacity analysis performed using traffic software Synchro 9.1
•
Traffic Signal Warrant & All-Way Stop Warrant Analysis performed based on methodology set forth in 2011 TMUTCD
•
Intersection Sight Distance & Stopping Sight Distance Analysis performed in accordance with the most current version of the AASHTO, A Policy on Geometric Design of Highways and Streets.
Findings • • • •
Delay and Level of Service
Existing two-way stop control LOS is C or better under all conditions
TWSC Level of Service (Delay)
Traffic signal warrants are not met for this intersection
Condition AM Peak
Eastbound B (12.8 s)
Westbound B (14.6 s)
PM Peak
B (13.9 s)
C (20.9 s)
Weekend Peak
B (12.0 s)
C (16.2 s)
All-way stop warrants are not met for this intersection
•
Accident data reveal only two accidents at this intersection over the three year evaluation period. Neither accident could be attributed to limited sight distance
Intersection Sight Distance requirement was not met 269’ vs 412’ required
•
Stopping Sight Distance requirement was met vs 250’ required
269’
1. Install 8’’ white solid line on the NB departure leg 2. Install yield sign (SE corner) 3. Install pedestrian ramp (SE island)
IMPLEMENTED IMPROVEMENTS Roadway speeds are 35 mph
4. Install “Cross Traffic Does Not Stop” plaque (EB & WB approaches)
6. Install stop-ahead sign (WB approach) 7. Remove non-compliant “Cross Traffic Does Not Stop” sign (WB approach)
Apt Dwy. Old San Antonio Rd.
Cabelas Dr.
5. Install pedestrian crossing sign (NE corner)
9. Modify text within the City’s Unified Development Code to prevent development from creating a similar situation in the future
RECOMMENDATIONS
Apt Dy. Old San Antonio Rd.
Cabelas Dr.
8. Install intersection warning sign with a 20 mph advisory speed approximately 200’ south of intersection on northbound Cabela’s Drive
Roadway speeds are 35 mph
Conclusions •
City Staff has already implemented initial signing and striping recommendations previously presented to City Council
•
Install intersection advisory signs on northbound Cabela’s Drive south of the intersection
•
Perform a follow-up study as area develops to evaluate need for signal in the future
Traffic Study Prepared by HDR Engineering, Inc. 504 Lavaca St, # 1175, Austin, TX 78701 May 3, 2016
Study Purpose 1. Existing conditions and traffic operations 2. Data collection 3. Analysis assumptions and methodology 4. Traffic signal, all-way stop warrant, intersection sight distance, stopping sight distance analysis and accident data findings 5. Recommendations based on study findings 6. Implementation of improvements 7. Conclusions
Existing Conditions Existing intersection conditions
Apt Dwy.
Cabelas Dr.
Old San Antonio Rd.
Roadway speeds are 35 mph
Data Collections 1. 24-hour approach counts collected December 10, 2015 2. Turning movement counts collected December 10 and 12, 2015 • • •
Weekday (Thursday) AM Peak Period – 7:00 – 9:00 AM Weekday (Thursday) PM Peak Period – 4:00 – 6:00 PM Weekend (Saturday) Peak Period – 1:00 – 3:00 PM
3. Field review of existing geometrics and traffic operations performed December 17, 2015 4. Field evaluation of intersection sight distance and stopping sight distance performed March 16, 2016 5. Data obtained from TxDOT motor vehicle crash database for reported crashes from December 1, 2013 through November 30, 2015 6. 2013 – 2015 Accident reports obtained from City of Buda Police Dept.
Analysis Assumptions & Methodology •
Existing (Year 2015) traffic volumes utilized to complete study
•
Intersection capacity analysis performed using traffic software Synchro 9.1
•
Traffic Signal Warrant & All-Way Stop Warrant Analysis performed based on methodology set forth in 2011 TMUTCD
•
Intersection Sight Distance & Stopping Sight Distance Analysis performed in accordance with the most current version of the AASHTO, A Policy on Geometric Design of Highways and Streets.
Findings • • • •
Delay and Level of Service
Existing two-way stop control LOS is C or better under all conditions
TWSC Level of Service (Delay)
Traffic signal warrants are not met for this intersection
Condition AM Peak
Eastbound B (12.8 s)
Westbound B (14.6 s)
PM Peak
B (13.9 s)
C (20.9 s)
Weekend Peak
B (12.0 s)
C (16.2 s)
All-way stop warrants are not met for this intersection
•
Accident data reveal only two accidents at this intersection over the three year evaluation period. Neither accident could be attributed to limited sight distance
Intersection Sight Distance requirement was not met 269’ vs 412’ required
•
Stopping Sight Distance requirement was met vs 250’ required
269’
1. Install 8’’ white solid line on the NB departure leg 2. Install yield sign (SE corner) 3. Install pedestrian ramp (SE island)
IMPLEMENTED IMPROVEMENTS Roadway speeds are 35 mph
4. Install “Cross Traffic Does Not Stop” plaque (EB & WB approaches)
6. Install stop-ahead sign (WB approach) 7. Remove non-compliant “Cross Traffic Does Not Stop” sign (WB approach)
Apt Dwy. Old San Antonio Rd.
Cabelas Dr.
5. Install pedestrian crossing sign (NE corner)
9. Modify text within the City’s Unified Development Code to prevent development from creating a similar situation in the future
RECOMMENDATIONS
Apt Dy. Old San Antonio Rd.
Cabelas Dr.
8. Install intersection warning sign with a 20 mph advisory speed approximately 200’ south of intersection on northbound Cabela’s Drive
Roadway speeds are 35 mph
Conclusions •
City Staff has already implemented initial signing and striping recommendations previously presented to City Council
•
Install intersection advisory signs on northbound Cabela’s Drive south of the intersection
•
Perform a follow-up study as area develops to evaluate need for signal in the future
