Embed Size (px)
Citation preview
LRT ENHANCEMENTS PROJECT
June 2018
APTA Rail Conference
Agenda
1. Agency Context
2. Study Background
3. Innovations Applied
4. N. First Street Project Results
5. Tasman Drive Project Results
6. Next Steps
Agenda
1. Agency Context
2. Study Background
3. Innovations Applied
4. N. First Street Project Results
5. Tasman Drive Project Results
6. Next Steps
• Measure B
• BART extension
• Ridership declines
• Focus on fiscal responsibility and efficiency
o Bus service restructuring
o Ad hoc committee
AGENCY CONTEXT
Agenda
1. Agency Context
2. Study Background
3. Innovations Applied
4. N. First Street Project Results
5. Tasman Drive Project Results
6. Next Steps
• 2010 LRT System Analysis Found Slow Light Rail System Speeds
o Many at-grade intersections
o Lots of track curves
o Mix of different cities and agencies involved
• Focus Areas:
o First Street
o Tasman Drive
o Downtown Transit Mall
STUDY BACKGROUND
7
8
9
I880 RampsSanta Clara
North First
Downtown
Civic Center
Agenda
1. Agency Context
2. Study Background
3. Innovations Applied
4. N. First Street Project Results
5. Tasman Drive Project Results
6. Next Steps
• Streetlight and Inrix Data Analysis
• Adaptive Pedestrian Timing
INNOVATIONS APPLIED
Existing Path
Diversion Route
• Space Saving Gate Configurations
INNOVATIONS APPLIED
Agenda
1. Agency Context
2. Study Background
3. Innovations Applied
4. N. First Street Project Results
5. Tasman Drive Project Results
6. Next Steps
• High cross street traffic volumes
• Traffic signal systems managed by City & County
N. FIRST STREET ISSUES &OPPORTUNITIES
• Large auto left turn volumes at some intersections conflict with rail
• Intensifying development environment
ORIGINAL PROJECT CONCEPT
Blue Line in Los Angeles
North First Street
• Increase maximum speeds from 35mph to 45mph requiring:
o Full fencing on both sides
o Four quadrant intersections gates and gates at cross street stop bar
o Full signal preemption
16
FINAL PROJECT CONCEPT
• Proposed Changes
o Provide traffic signal pre-emption w/o gates
o Install pedestrian detection radar
o Install LRT confirmation signals
17
0:03:17 0:03:17 0:03:17
0:07:56 0:07:24 0:07:56
0:05:51
0:00:45
0:00:00
0:02:53
0:05:46
0:08:38
0:11:31
0:14:24
0:17:17
0:20:10
No Project Major Improvements With Improvements
North First Travel Times
Dwell Travel signal delay
38% Savings
30% Savings
ROW, Major Construction,
Lane Reductions, High Cost
Signal Timing Changes, Small Capital Improvements,
Low Cost
COMPARISON OF ALTERNATIVES
• How does it work?
o Greatly Improve Signal Priority
o Extending crossing time based on passive in crosswalk detection is allowed
o Not allowed to reduce actual timing, but may assume a faster walking speed for initial countdown time
o Thermal or Radar detection
PEDESTRIAN CROSSWALK DETECTION
Agenda
1. Agency Context
2. Study Background
3. Innovations Applied
4. N. First Street Project Results
5. Tasman Drive Project Results
6. Next Steps
TASMAN DR. ISSUES &OPPORTUNITIES
• Similar to N. First
• New LRT line to be added when BART station opens in Milpitas
• Adds trains to heavily used N. First / Tasman Drive intersection
• Tasman Drive is a Complete Streets focus corridor
Additional line to connect
BART ext. to Silicon Valley
TASMAN DRIVE AT N. FIRST STREET LRT ROUTES
• Eliminate left turns
• Reduce cycle times
• Use space from elimination of lanes for bike & pedestrian improvements
TASMAN DRIVE AT N. FIRST STREET PROJECT
• Used Streetlight data to assess traffic diversion impacts
TASMAN DRIVE AT N. FIRST STREET ANALYSIS
Existing Path
Diversion Route
Agenda
1. Agency Context
2. Study Background
3. Innovations Applied
4. N. First Street Project Results
5. Tasman Drive Project Results
6. Next Steps
NEXT STEPS
Downtown San Jose Transit Mall
Jason Kim
VTA
Nate Conable
Ferh & Peers
THANK YOU FOR
YOUR TIME AND INTEREST
