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The
communication possibilities and data generated by ITS can be used for
operational control, public information, and service planning. North American agencies are lagging behind their European and
Asian counterparts for several reasons:
the lack of a modern database infrastructure that allows efficient
access and distribution of data, a lack of trained staff, and competing
priorities for limited investment funds.
But the effort to overcome these obstacles can pay off in cost
savings for agencies, time savings and increased ridership, as the
following examples suggest.
Montreal
Over the last twenty years in Montreal, bus lanes of
all types, including counterflow, center and curb lanes have been added on
the 15 bridges crossing onto the island and along major arterial roads.
What sets the region apart from most of the rest of North America
is that some lanes have dedicated signals for buses and taxis.
While such solutions are effective, they can be costly and take
years to implement, especially when computerized signaling systems have to
be installed or modified at numerous intersections.
Furthermore, despite Montreal’s reputation as a transit-friendly
city, bus lanes are still politically difficult to implement if they
replace on-street parking.
ITS
offers a potential lower-cost compromise:
bus detection coupled with right-side queue bypass lanes just
before and just after an intersection.
When an approaching bus is detected, the right-turning traffic gets
a green signal a few seconds early so that the bus can come forward to the
intersection. At the next
cycle, the bus is given a signal early so it can cross and then remerge
left, putting it in front of all other traffic.
Suburban Washington, DC
The Potomac and Rappahannock Transportation
Commission (PRTC) began providing its “OmniRide” local transit service
in the Virginia suburbs of Washington, DC, in 1995.
OmniRide combines general service with paratransit service using a
combination of fixed stops and flexible routing within 3/4-mile corridors
on either side of established routes.
Transit schedules have margins for deviations, and the control
center alerts drivers to changes. This
integrated system appealed to the agency because it enables them to comply
with the Americans with Disabilities Act more efficiently than the common
alternative – parallel paratransit and fixed route service –
while providing improved coverage to the general public in a
low-density suburban area. The
smaller paratransit-style vehicles are also more appropriate for
neighborhood streets.
OmniRide’s
five routes attract between 6 to 15 passengers per hour.
Call-in requests account for about 13 percent of trips. With the
recent increase of daily operating hours, ridership has jumped 58 percent
to 1,900 passengers per day. Further
ITS improvements will be added, including a more automated means of
communicating with drivers (mobile data terminals) and more accurate
location reporting to aid vehicle tracking and dispatching (using GPS
automatic vehicle location). This last feature also will allow for the
automated statistical analysis needed to refine routes, stops, and
schedules.
Los Angeles
Los
Angeles MTA has two new “Metro Rapid” bus routes to complement
MetroRail. They feature
low-floor buses with a distinct image, longer bus-stop spacings, and ITS
that can detect approaching buses and give them up to 10 seconds
longer to get through an intersection.
Travel times on both routes are now more reliable and have been cut
by an average of 25 percent. The increased speed means more service for
the same operating budget, for two reasons:
the fleet can make roundtrips at a higher rate, and better service
attracts more passengers and revenue.
The Ventura Boulevard line connects with the Red Line subway such
that travel time to downtown LA is now competitive with autos.
The investment of about $10 million was modest considering how long
these routes are, and can readily be justified by the results -- since
their opening, ridership has grown by more 25 percent.
For
more information, look to http://www.stcum.qc.ca
for Montreal, http://www.omniride.com
for Virginia’s Omniride, or http://www.mta.net
for Los Angeles. To find out
more about the OmniRide program, please contact Eric Marx at emark@omniride.com
. Eric Bruun can be reached
at BruunB@aol.com.
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