I.R.O.'s Incident Response Operators, (aka tow truck/flatbeds) Units
assigned to the Tunnels, (Sumner, Callahan, Ted Williams) as well as I-93N/S & I-90 to/from Route 1A and Exit 24 E/W. These units can tow, provide limited repair services but do not provide gas.
E.S.P.'s Emergency Service Patrols These units repair, provide gas, but
don't tow but have push bumpers to relocate disables in the travel lanes.
These units cover the "original" Turnpike for the NY line to Exit 24 E/W.
The Ramps
Ramp: Location
A On ramp from South Boston/Bypass Rd., D-Street/ to I-90 East
A-CN On ramp from Atlantic Ave. @ Northern Ave. to I-93 North
AS On ramp from Albany Street @ Herald Street to I-93 South
B On ramp from South Boston / D-Street to I-90 West
C Off ramp from I-90 East to I-93 North (Exit 24B)
CC Off ramp from I-90 East to I-93 South (Exit 24C)
C-DN On ramp from I-90 East (Exit 24B) and D ramp to I-93 North
CC-D On ramp from I-90 East CC (Exit 24C) and D ramp to I-93
South
CC-WSS On ramp from I-90 East and West to I-93 South
C-L Exit 28 from I-93 North to Cambridge Street and Somerville
(Charlestown Local)
CN-L Ramp from I-93 North & Sumner Tunnel to Nashua Street &
Martha Way,
CN-S Exit 26 from I-93 North to Storrow Drive and Leverett Circle
CN-SA Exit 23 from I-93 North to Government Center & North Street
CS-CT Exit 24B from I-93 South to the Callahan Tunnel
CS-P Exit 23 from I-93 South to Purchase Street at Congress
Street
CS-SA Exit 24A from I-93 South to Clinton Street at Atlantic
Avenue
CT Exit 27 from I-93 North to the Tobin Bridge and Route 1
D On ramp from South Boston / Congress Street to I-93 N&S
DB Ramp from D Street to Ramp B, I-90 West/East and By-pass
Road
DN Ramp from Ramp D to I-93 North prior to ramp C-DN
E-K Ramp from I-90 East, (Exit 24A) to South Station
Transportation Center
E-SB/E-C Exit 25 from I-90 east to SBBR (E-SB) or Congress Street
(E-C)
E-SS Off ramp to I-90 East to South Station Transportation
Center (Exit 24A)
ET On Ramp from Logan Airport to I-90 West via the TWT
F Exit 24 & 25 from I-90 West to Congress Street and I-93 N&S
FD Transition ramp from Ramp F ( Exit 24 from I-90 West) to
Ramp D
FL Frontage Road North to Ramp L to I-90 East
FX HOV ramp from Ramp CC (I-90 E&W) to I-93 South
H Exit 20 from I-93 South to I-90 West and Albany Street
HOV-EB From I-93 North Ramp XXE & Frontage Road North at Broadway to I-90
East
I From Ramp L to South Boston-Congress Street
II On ramp to I-93 North from Frontage Road North above Mass
Ave. Interchange
K Exit 20 from I-93 North to Frontage Road North, I-90 E&W and
Kneeland Street
KK From Ramp K (I-93 North Exit 20) to I-90 West
L From Ramp K (I-93 North Exit 20 to I-90 E&W) to I-90 East
LC-N From Leverett Circle (LC) to I-93 North (via Ramp S-N)
L-CS On ramp from Leverett Circle to I-93 South (Central South)
LL On ramp from Frontage Road North at Broadway to I-93 North
L-T Ramp from Rutherford Ave. to the Tobin Bridge
MW HOV on ramp from Frontage Road North at Broadway to I-90
West
N-LC Ramp from I-93 South & Tobin Bridge to Nashua Street
NS Exit 26 from I-93 South to Storrow Drive & Leverett Circle
P On ramp from Mass Ave. to Frontage Road South & I-93 South
Q On ramp to I-90 West from Kneeland Street
RR Ramp from I-93 South to Purchase & Summer Streets
RS On ramp from Purchase Street at Congress Street to I-93
South and I-90 West or Albany via the "Collector"
RT On ramp from Essex Street at Lincoln Street merge with Ramp
A-CN to I-93 North
RV On ramp from Essex Street at Lincoln Street to I-93 South
SA-CN On ramp from Cross Street at New Sudbury to I-93 North
SA-CS On ramp from New Chardon to I-93 South
SA-CT On ramp from New Chardon to Callahan Tunnel (CT) (Route 1A
North)
S-MA Exit 18 from I-93 South to Mass Ave. (MA)
S-N On ramp (new tunnel under Leverett Circle) from Storrow
Drive East to I-93 North
ST On ramp from Harbor Side Drive, (Logan Airport) to TWT West
S-TB On ramp from Leverett Circle to Tobin Bridge (TB) via Ramp
S-N
ST-CN Ramp from Sumner Tunnel (ST) to I-93 North (CN aka Central
North)
ST-S Ramp from Sumner Tunnel (ST) to Storrow Drive (S)
ST-SA Ramp from Sumner Tunnel (ST) to Surface Artery (SA) at New
Chardon & North Washington Streets
TAD Exit 26 from I-90 East TWT to Logan Airport
TC Ramp from Tobin Bridge and/or Rutherford Ave. to I-93 South
("Old CANA Loop Ramp")
T-L Ramp from Tobin Bridge to Rutherford Ave., (Tobin->Local)
T-S Ramp from Tobin Bridge and Rutherford Ave. to Storrow Drive
(Tobin->Storrow)
U From Ramp H (from I-93 South) to Albany Street
WSS HOV Ramp from I-90 west to South Station Transportation
Center
X HOV ramp from Kneeland Street to I-93 South
XE HOV ramp from Kneeland Street (Ramp X) to I-90 East
XX HOV ramp from I-93 North to I-90 East (Ramp XXE) and
Kneeland Street (Ramp K)
XXE HOV ramp from I-93 North HOV to I-90 East
Slip Ramp On ramp from I-90 Collector to I-93
Unnamed On ramp from Frontage Road South (at South Bay Mall) to I-93 South
This should give you a better understanding of where things are. Some of
these "ramps" are very short and merge into other ramps. Signage for all of these designations are posted at the beginning of the ramps with a 0.0 mile maker designation. Additional signage is place on the walls of the ramps and tunnels.
Quote:
Originally Posted by garys
Incorrect. The IROs are tow trucks or service units on the Mass Pike sections within the city of Boston. That includes the Ted Williams Tunnel, turnpike extension, and I-93 tunnels in Boston. I forget what the acronym stands for. The registered operated is indicated a the owner.
My guess is that they ask the dispatcher to run the plate or driver so that they can keep their eyes on them and not have to pay attention to the computer. Since MA troopers generally ride alone, their first priority is to make sure that they can address any potential threats.
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State Police Lingo
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