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SR 237 Express Lanes Policy Implications and Lessons Learned
Murali Ramanujam, Casey Emoto & Gene Gonzalo
Santa Clara Valley Transportation Authority (VTA)
2
Silicon Valley
May 5, 2016
3
SR 237 Express Lanes
Conversion of HOV to HOV Connector
May 5, 2016
GP Connector
HOV Connector
May 5, 2016
5
SR 237 Express Lanes
Increased Express Lanes Usage
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6
SR 237 Express Lanes
Average Corridor Speeds (FY 2016 Quarter 3)
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Westbound
Eastbound
7
SR 237 Express Lanes
Downstream congestion (HOV Only)
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8
SR 237 Express Lanes
Occupancy Requirement
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9
SR 237 Express Lanes
Clean Air Vehicle Count
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Date 1/14/2016 2/4/2016 3/16/2016 Average Percent
Time 8:00-9:00 AM 8:00-9:00 AM 8:00-9:00 AM
Tolled Vehicles 167 162 236 188 13%
Clean Air Vehicles 573 507 605 562 38%
Carpool 787 641 728 719 49%
Total 1527 1310 1569 1,469 100%
Date 1/13/2016 2/22/2016 3/16/2016 Average Percent
Time 4:30-5:30 PM 4:30-5:30 PM 4:30-5:30 PM
Tolled Vehicles 186 195 155 179 14%
Clean Air Vehicles 334 385 481 400 31%
Carpool 768 761 580 703 55%
Total 1,288 1,341 1,216 1,282 100%
Morning Peak Hour
Afternoon Peak Hour
10
Green Car for The Masses
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11
SR 237 Express Lanes
FY 2015 CHP Citations Summary
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DWL Crossing
(7%)
Carpool (73%)
Speed
(4%)
Seatbelt (1%)
Cell Phone (3%)
Primary Collision
Factor (3%)
Mechanical (9%)
DWL Crossing Carpool
Speed Seatbelt
Cell Phone Primary Collision Factor
MechanicalT
ota
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ita
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Ve
rba
l W
arn
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s
DW
L C
rossin
g
Ca
rpo
ol
Sp
ee
d
Se
atb
elt
Ce
ll P
ho
ne
Pri
ma
ry C
oll
isio
n
Fa
cto
r
Me
ch
an
ica
l
Total
FY (2015)537 110 39 390 22 4 17 18 47
12
SR 237 Express Lanes
FasTrak Flex Switchable Transponders
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13
Access arrangement
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14
SR 237 Express Lanes
Tolled Revenue by Month
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0
20000
40000
60000
80000
100000
120000
140000
To
lled
Rev
nu
e
Month
FY 2012 FY 2013 FY 2014 FY 2015 FY 2016
March 2015 –
EB Max - $4 to $5
November 2015 –
EB Max - $5 to $6
WB Max- $6 to $7
April 2015 –
WB Max - $5 to $6
15
Policy Implications on Operations
• Performance metric – minimum speed
• HOV requirement and exemptions
• Enforcement – toll violation or occupancy violation
• Business rules – tag requirement
• Toll rate – cap or no cap
• Goal – maximize revenue or throughput
• Hours of operations – peak period or 24/7
May 5, 2016
16
What Are The Lessons Learned?
• Focus on providing “Express” or reliable trip
• Expand hours of operations beyond peak period
• Use automation techniques to capture toll violation
enforcement
• Implement dual lane Express Lanes where possible
• Engage users to get input through user group and
provide real-time information
May 5, 2016
