Intermodal passenger transport

One of the challenges of intermodal transport is changing between modes. Despite proximity, transfers can be difficult. One instance is this bus stop inside London (Heathrow) Airport, England.

Two bicycles on the rack of the Los Angeles Metro bus.

Intermodal passenger transport, also called mixed-mode commuting, involves using two or more modes of transportation in a journey. The goal of mixed-mode commuting is often to combine the strengths (and offset the weaknesses) of various transportation options. A major goal of modern intermodal passenger transport is to reduce dependence on the automobile as the major mode of ground transportation and increase use of public transport. To assist and encourage such trips, Intermodal Journey planning software - in the form of online web applications or mobile device apps - is often available for travellers to plan and schedule their journey.

Mixed-mode commuting often centres on one type of rapid transit, usually rail, to which low-speed options (i.e. bus, tram, or bicycle) are appended at the beginning or end of the journey.^[1] Trains offer quick transit into an urban area, where passengers can disembark and access a similar array of options to complete the trip. Most modes of transportation have always been intermodal; for example, to get to the airport people have always needed drive or be driven (e.g. take a taxi) or to take public transport (if available), and to get to an inter-regional railway station people have needed take local transport such as a bus, tram, or urban rail.

History

Passenger transport has always been intermodal. People switched from carriages to ferries at the edge of a river too deep to ford. In the 19th century, people who lived inland switched from train to ship for overseas voyages. Hoboken Terminal in Hoboken, New Jersey was built to let commuters to New York City from New Jersey switch to ferries to cross the Hudson River in order to get to Manhattan. A massive ferry slip, now in ruins, was incorporated into the terminal building. Later, when a subway was built through tunnels under the Hudson, now called the PATH, a station stop was added to Hoboken Terminal. More recently, the New Jersey Transit's Hudson-Bergen Light Rail system has included a stop there, but it is a relatively long walk from the terminal building. Ferry service has recently been revived, but passengers must exit the terminal and walk across the pier to the more modest ferry slip.

Urban mixed-mode commuting

Public transportation systems such as train or metro systems have the most efficient means and highest capacity to transport people around cities. Therefore mixed-mode commuting in the urban environment is largely dedicated to first getting people onto the train network and once off the train network to their final destination.

Automobile to public transport nodes

Although automobiles are conventionally used as a single-mode form of transit, they also find use in a variety of mixed-mode scenarios. They can provide a short commute to train stations, airports, and piers, where all-day "park and ride" lots are often available. Used in this context, cars offer commuters the relative comfort of single-mode travel, while significantly reducing the financial and environmental costs.

Taxicabs and Rental cars also play a major role in providing door-to-door service between airports or train stations and other points of travel throughout urban, suburban, and rural communities.

(Automobiles can also be used as the centerpiece of a multi-mode commute, with drivers resorting to walking or cycling to their final destination. Commuters to major cities take this route when driving is convenient, but parking options at the destination are not readily available.)

Park and ride

Transport planners often try to encourage automobile commuters to make much of their journey by public transport. One way of doing this is to provide car parking places at train or bus stations where commuters can drive to the station, park their cars and then continue on with their journey on the train or bus: this is often called Park-and-Ride.

Similar to Park-and-Ride is what is often termed "Kiss-and-Ride". Rather than drive to the train or bus station and park the commuter is driven to the station by a friend or relative (parent, spouse etc.) The "Kiss" refers to the peck on the cheek as the commuter exits the car. Kiss-and-Ride is usually conducted when the train/bus/ferry station is close to home, so that the driver doing dropping the commuter off has a short journey to and from home.

Bus to public transport nodes

Chicago's Jefferson Park Transit Center is an intermodal hub for bus and train commuters.

Many large cities link their railway network to their bus network. This enables commuters to get to places that are not serviced directly by rail as they are often considered be too far for walking.

Feeder buses are buses are a specific example of this; feeder buses service local neighbourhoods by taking travellers from their homes to nearby train stations which is important if the distances are too far to comfortably walk; at the end of the working day the buses take the travellers home again. Feeder buses work best when they are scheduled to arrive at the railway station shortly before the train arrives allowing enough time for commuters to comfortably walk to their train, and on the commuters' return journey buses are scheduled to arrive shortly after the train arrives so that the buses are waiting to take the commuters home. If train and bus services are very frequent then this scheduling is unimportant as the commuter will in any case have a very short wait to interchange.

Feeder buses are very successful in servicing customers' needs which helps to increase patronage and therefore operating revenue. Some railway companies, in fact, operate - or pay bus companies to operate - feeder bus routes for this exact purpose. For example, the MTR Corporation in Hong Kong operates MTR Bus routes to complement its MTR and Light Rail rail services; at the same time they employ Kowloon Motor Bus to operate several MTR Feeder Bus routes on behalf of MTRC, using vehicles owned by MTRC.

Bike-and-Ride

A Parkiteer bicycle parking station at Sunshine railway station in Melbourne, Australia.

All around the world bicycles are used to get to and from train and other public transportation stations; this form of intermodal passenger transport is often called "Bike-and-Ride" (n.b. the "ride" here confusingly refers to the part of the trip on public transport; the term is constructed along the lines of Park-and-Ride). Due to the threat of theft or vandalism of bicycles left at these train/bus/ferry stations, "bike and ride" transport benefits greatly from secure bicycle parking facilities such as bicycle parking stations being available.

Some train/bus/ferry systems allow commuters to take their bicycles on board the trains/buses/ferries^[2] allowing cyclists to ride at both ends of the commute, though sometimes this is restricted to off-peak travel periods: in such cases, folding bicycles may be permitted where regular bicycles are not. In some cities, bicycles are permitted aboard trains and buses.^[3][4]

Public bicycles at Euston station.

In some cities a public bicycle rental programme has been implemented which allows travellers to get to and (more usually) from a train station. In such cases a traveller arriving at a train station can take a public bike from its docking station for the remainder of their commute, and deposit the bike to another docking station near to their destination.

There are great advantages to using "Bike-and-Ride" in cities: when a bicycle is used instead of a car for this costs decrease (fuel and parking savings, even to the full extent that families no longer need to own and operate multiple cars) and environmental benefits increase (i.e. less pollution).^[5] "Bike-and-Ride" can also contribute greatly in the reduction of traffic congestion on roads at peak times, delivering significant cost savings to the city and local government.

Inter-regional mixed mode commuting

Intermodal passenger transport involving air travel

Airport rail link

Many cities have extended subway or rail service to major urban airports. This provides travellers with an inexpensive, frequent and reliable way to get to their flights as opposed to driving or being driven, and contending with full up parking, or taking taxis and getting caught in traffic jams on the way to the airport. Many airports now have some mass transit link, including London, Sydney, Munich, Hong Kong, Vancouver and New York City (JFK).

Airport–ferry connection

At the Hong Kong International Airport, ferry services to various piers in the Pearl River Delta is provided. Passengers from Guangdong can use these piers to take a flight at the Airport, without passing through customs and immigration control, effectively like having a transit from one flight to another. The Airport is well-connected with expressways and an Airport Express train service. A seaport and logistics facilities will be added in the near future. Kansai International Airport is also connected to Kobe Airport with ferries.

Automobiles on trains

Several passenger rail systems offer services that allow travelers to bring their automobiles with them. These usually consist of automobile carrying wagons attached to normal passenger trains, but some special trains operate solely to transport automobiles. This is particularly of use in areas where trains may travel but automobiles cannot, such as the Channel Tunnel. Another system called NIMPR is designed to transport electric vehicles on high speed trains.

Trains on boats

A train ferry is a ship designed to carry railway vehicles. While usually used to carry freight vehicles, passenger cars can also be carried. In other places passengers move between passenger cars to a passenger ferry.

Transfer facilities

In recent years, an increasing emphasis has been placed on designing facilities that make such transfers easier and more seamless. These are intended to help passengers move from one mode (or form) of transportation to another. An intermodal station may service air, rail, and highway transportation for example.

In some cases, facilities were merged or transferred into a new facility, as at the William F. Walsh Regional Transportation Center in Syracuse, New York or South Station in Boston, Massachusetts. In other cases new facilities, such as the Alewife Station In Cambridge, Massachusetts were built from the start to emphasize intermodalism.

Regional transit systems in the United States often include regional intermodal transit centers that incorporate multiple types of rail and bus services alongside Park and Ride amenities. Until the completion of San Francisco Transbay Transit Center, the Millbrae Intermodal Terminal in California is the largest intermodal transit center west of the Mississippi which includes direct, on-platform connections between BART, the Bay Area's regional rail system, Caltrain the San Francisco Peninsula's commuter rail, and SamTrans, the regional bus service for San Mateo County. The uniqueness of this transfer facility is that turnstiles are located on the platforms between rail services in addition to on a separate concourse to allow for direct transfers.^[6] Millbrae Intermodal Terminal is also planned to be incorporated into the California High-Speed Rail project as one of two stations between San Francisco and San Jose.

Assessment

Advantages

Mixed mode commuting combines the benefits of walking, bicycle commuting, or driving with the benefits of rapid transit while offsetting some of the major disadvantages of each. The use of a bicycle can, for example, make an (inexpensive compared to a car) 20 mile light-rail or suburban rail journey attractive even if the endpoints of the journey each sit 1 mile out from the stations: the 30 minutes walking time becomes 8 minutes bicycling.

As in the example above, location plays a large role in mixed mode commuting. Rapid transit such as express bus or light rail may cover most of the distance, but sit too far out from commute endpoints. At 3 mph walking, 2 miles represents about 40 minutes of commute time; whereas a bicycle may pace 12 mph leisurely, cutting this time to 10 minutes. When the commuter finds the distance between the originating endpoint (e.g. the home) and the destination (e.g. the place of employment) too far to be enjoyable or practical, commute by car or motorcycle to the station may remain practical, as long as the commute from the far end station to the destination is practical by walking, a carry-on cycle, or another rapid transit such as a local or shuttle bus.

In general, locations close to major transit such as rail stations carry higher land value and thus higher costs to rent or purchase. A commuter may select a location further out than practical walking distance but not more than practical cycling distance to reduce housing costs. Similarly, a commuter can close an even further distance quickly with an ebike, motorcycle, or car, allowing for the selection of a more preferred living area somewhat further from the station than would be viable by walking or simple bicycle.

Other cost advantages of mixed mode commuting include lower vehicle insurance via Pay As You Drive programs; lower fuel and maintenance costs; and increased automobile life. In the most extreme cases, a mixed-mode commuter may opt to car share and pay only a small portion of purchase, fuel, maintenance, and insurance, or to live car-free. These cost benefits are offset by costs of transit, which can vary. A Maryland MTA month pass valid for MTA Light Rail, Metro Subway, and City Bus costs $64,^[7] while a month pass for the Baltimore to DC MARC costs $175.00^[8] and a DC MetroRail 7 day pass costs $47 totaling $182.^[9]

Disadvantages

The effectiveness of a mixed-mode commute can be measured in many ways: speed to destination, convenience, security, environmental impact, and proximity to mass transit are all factors. Because mixed-mode commutes rely on a certain degree of coordination, scheduling issues with mass transit can often be an issue. For example, a sometimes-late train can be an annoyance, and an often-late train can make a commute impractical.^[10]

Weather can also be a factor. Even when the use of an automobile is involved, the transition from one mode of transportation to another often exposes commuters to the elements. As a result, multi-mode commuters often travel prepared for inclement weather.

See also

• Commuting
• Park and ride
• Intermodal Journey Planner
• The notion of co-modality introduced by the European Commission
• Flying car (aircraft)
• Multimodal transport

References

External links

• INTERMODES - Congress, Exhibition and technical tours dedicated to intermodality in passenger transportation
• List of International airports with adjoining rail links
• International Air Rail Organization
• Air Rail Today (A.R.T) (Airport Expresses)
• European Local Transport Information Service (ELTIS) provides case studies concerning passenger intermodality as a local transport concept
• LINK - The European Forum on Intermodal Passenger Travel
• KITE - Knowledge Base for Intermodal Passenger Travel in Europe