Exhibit D-MBTA Bus Lane Designs.pdf

Types of Bus Lanes for Automated Camera Enforcement MBTA has or is planning to have the following types of bus lanes present within our system.

As such, the selected vendor will need to be able to identify standing and parking violations within each of these bus lane treatments.

Each example below includes a definition of the bus lane type, an image, and a link to a Google Street View of where this treatment can be viewed within the MBTA service area (if applicable).

Contents Center-running

Separated Busway

Contraflow

Roundabout/Rotary

Curbside

Turning Lane Offset

Bus Stop Offset

Parking Offset

Floating Queue Jump

Part-time with Parking

Part-time with General Travel Lane

Transit-only Street

Center-running Center-running bus lanes are located in the middle of the street between opposite directions of general-purpose traffic.

See it in the MBTA service area: Columbus Ave in Boston https://www.google.com/maps/@42.3134636,-71.0951478,3a,75y,293.62h,90.25t/data=!3m7!1e1!3m5!1sY3Chnp3sKY7QuYXyrRmY_A!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Separated Busway Separated busways are a type of transitway, with street space dedicated exclusively to transit operations, physically separated from general-purpose traffic. When implemented along streets with mixed traffic, either on a one or two-way street, separated busways typically run along one side of the street either as bi-directional transit lanes or a single transit lane.

MBTA is considering a separated busway alongside general-purpose traffic for a new transit corridor, though none are currently built. However, there are instances of exclusive busways in the MBTA service area where only buses are allowed on certain streets, and general-purpose traffic is fully banned.

See it in the MBTA service area: Davis Station Busway in Somerville mailto:https://www.google.com/maps/place/Davis/@42.3961871,-71.1201227,3a,29y,304.9h,91.86t/data=!3m8!1e1!3m6!1sKW-Fup_Ah-pYEo1nVcd9fw!2e0!3e11!6shttps://streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Contraflow Contraflow lanes are dedicated bus lanes that flow against general traffic.

No contraflow bus lanes currently exist in the MBTA service area, but one is planned for Warren Street near Nubian Square Station, as depicted in the design drawing below.

See it in the MBTA service area: Warren St in Boston, planned for implementation next year https://www.google.com/maps/place/Nubian+Station/@42.3297688,-71.0833029,3a,75y,213.75h,89.71t/data=!3m7!1e1!3m5!1skN-ZBD-h7s9Ic9kFi161ew!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Roundabout/Rotary Roundabout, or rotary, bus lanes are located within a traffic circle and typically reserve the outermost travel lane for bus use. They can often extend into curbside bus lanes outside the extent of the roundabout.

See it in the MBTA service area: Sweetser Circle in Everett https://www.google.com/maps/place/Sweetser+Circle/@42.4028853,-71.0601161,3a,75y,312.27h,90t/data=!3m7!1e1!3m5!1s3P4xVL6Niz8FaWdtAgrsBg!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Curbside Curbside Bus Lanes are bus lanes that run adjacent to the curb. Note that curbside bus lanes turn into bus stops where marked by signage, which warrants a different fine penalty and must be distinguishable from the bus lane using the selected vendor’s technology.

See it in the MBTA service area: Washington St in Boston https://www.google.com/maps/place/Washington+St+%26+Massachusetts+Ave,+Boston,+MA+02118/@42.34649,-71.0646168,3a,75y,233.75h,87.22t/data=!3m7!1e1!3m5!1spanO8OWwVcrZfFHMjSn88A!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Turning Lane Offset Turning lane offset bus lanes restrict the use of the outer travel lane to buses only, while preserving space for a general traffic turning lane along the curb. Drivers are allowed to cross the bus lane where visually indicated by hashed areas (see the area directly below the smaller crosswalk in the photo below) but should not be within the bus lane otherwise.

See it in the MBTA service area: Broadway in Somerville

Bus Stop Offset Bus stop offset bus lanes restrict the use of the outer travel lane to buses only, while preserving space for a bus stop along the curb. Both lanes, the bus lane and bus stop, should be exclusive to buses with no general-purpose traffic.

See it in the MBTA service area: Congress St in Boston https://www.google.com/maps/@42.3894035,-71.0876502,3a,75y,38.32h,86.38t/data=!3m7!1e1!3m5!1sj16jQfIpawKJfongea1WGg!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D https://www.google.com/maps/@42.361913,-71.0579129,3a,75y,23.63h,77.61t/data=!3m7!1e1!3m5!1sZPNKcQc56eNbZrohEiMYYQ!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Parking Offset Parking offset bus lanes restrict the use of the outer travel lane(s) to buses only, while preserving on-street parking along the curb.

In these instances, cars are allowed in the bus lane temporarily as they parallel park. The selected vendor will need to create evidence packages that can help a human reviewer determine whether a driver is attempting to legally parallel park along the curb, or if they are parked or standing in the bus lane.

See it in the MBTA service area: Washington St in Boston https://www.google.com/maps/place/Washington+St+%26+E+Berkeley+St,+Boston,+MA+02118/@42.3436149,-71.0661659,3a,75y,72.23h,82.07t/data=!3m7!1e1!3m5!1sXk0CAILRkLreqvOxSMDbFg!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Floating Queue Jump Short bus lanes—also called transit approach lanes, queue bypass lanes, or queue jump lanes—are segments of traffic lanes dedicated to buses approaching an intersection.

Due to road geometry in the MBTA service area, these queue jumps may occasionally “float” into the middle of a non-standard intersection, as depicted below.

See it in the MBTA service area: Summer St in Boston, Belmont St in Cambridge https://www.google.com/maps/place/South+Station+(Train+Terminal)/@42.352599,-71.0552443,3a,75y,103.66h,92.73t/data=!3m7!1e1!3m5!1sfm2BC7htHI5VL6ZfTnySiQ!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D https://www.google.com/maps/place/Belmont+St+%26+Mt+Auburn+St,+Cambridge,+MA+02138/@42.3747092,-71.1499482,3a,75y,216.93h,84.66t/data=!3m7!1e1!3m5!1sp2Wa8iTUE-CKNsLIRA9Hkw!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Part-time with Parking Part-time bus lanes are restricted to bus travel only during part of the day, in this case using space otherwise allocated for curbside parking lanes.

See it in the MBTA service area: Broadway in Everett

Part-time with General Travel Lane Part-time bus lanes are restricted to bus travel only during part of the day, in this case using space otherwise allocated for general travel lanes.

See it in the MBTA service area: Mystic Ave in Medford mailto:https://www.google.com/maps/@42.4119871,-71.0509287,3a,75y,237.42h,90.39t/data=!3m7!1e1!3m5!1sbvOGtXdE565RxnNU4DOjCw!2e0!6shttps://streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D https://www.google.com/maps/@42.4045287,-71.100573,3a,75y,141.26h,78.44t/data=!3m7!1e1!3m5!1sBAsjYqGPko6LmoVPGFQUfA!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D

Transit-only Street Transit-only streets, sometimes referred to as transit malls, are a type of transitway that converts a corridor, curb-to-curb, for exclusive or nearly exclusive use by buses, prohibiting or restricting general purpose traffic.

In the MBTA service area, streets that feed into station busways are often transit-only.

These transit-only streets are marked by Do Not Enter signs at the entrance to the street, but typically do not have any other markings or red paint.

See it in the MBTA service area: Field’s Corner Station Busway in Boston, Davis Station Busway in Somerville https://www.google.com/maps/place/Fields+Corner/@42.2992666,-71.0643842,3a,75y,46.79h,89.75t/data=!3m7!1e1!3m5!1szdSE-YsbR-DvzTUcX1Rb-A!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D https://www.google.com/maps/place/Davis/@42.396251,-71.1201222,3a,75y,304.36h,91.07t/data=!3m7!1e1!3m5!1sXK0-Va_MQ5TAb1UJ8-CJxQ!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D https://www.google.com/maps/place/Davis/@42.396251,-71.1201222,3a,75y,304.36h,91.07t/data=!3m7!1e1!3m5!1sXK0-Va_MQ5TAb1UJ8-CJxQ!2e0!6shttps:/streetviewpixels-pa.googleapis.com/v1/thumbnail?entry=ttu&g_ep=EgoyMDI1MDcxNi4wIKXMDSoASAFQAw%3D%3D