The following is a list of transportation options inSan Diego, California.
San Diego is served by theSan Diego Trolley,bus (operated by theSan Diego Metropolitan Transit System),COASTER, andAmtrak. The trolley primarily serves downtown and surroundingurban communities,Mission Valley, east county, the coastal south bay, and the international border. A planned Mid-Coast line will operate fromOld Town toUniversity City along the Interstate 5 Freeway. There are also plans for a Silver Line to expand trolley service downtown.[citation needed]
The Amtrak and COASTER trains currently run along the coastline and connect San Diego with Los Angeles, Orange County, San Bernardino, Riverside, and Ventura viaMetrolink. There are two Amtrak stations in San Diego,Old Town Transit Center andSanta Fe Depot.
The bus is available along almost all major routes; however, a large number of bus stops are concentrated in central San Diego. Typical wait times vary from 15 to 60 minutes, depending on the location and route.[1] Trolleys arrive at each station every 7 to 30 minutes (depending on time of day and which trolley line is used).[citation needed] Ferries are also available every half hour crossing San Diego Bay toCoronado.
In San Diego, the average amount of time people spend commuting with public transit to and from work on a weekday is 70 min. 23% of public transit riders, ride for more than 2 hours every day. The average amount of time people wait at a stop or station for public transit is 16 min, while 29% of riders wait for over 20 minutes on average every day. The average distance people usually ride in a single trip with public transit is 11.2 km, while 30% travel for over 12 km in a single direction.[2]
The dry and mild climate of San Diego makes cycling a convenient and pleasant year-round option. The city has somesegregated cycle facilities, particularly in newer developments, however the majority of road facilities specifically for bicycles are painted on regular roadways, covering over 1,570 miles throughoutSan Diego County.[3] The city's hilly, canyoned terrain and long average trip distances—brought about by strict low-density zoning laws—somewhat restrictcycling for utilitarian purposes.
In 2014 of .9% of commuters traveled by bicycle, below the average 1% for large U.S. cities. Also in 2014, San Diego experienced 6.8 bicyclist fatalities per 10,000 cyclist commuters, the average for all large cities was 4.7.[4]
Abicycle sharing system calledDecoBike was instituted in 2015.[5]
San Diego has two major international airports entirely or extending into its city limits:
San Diego International Airport is the primary commercial airport serving San Diego. It is the busiest single-runway airport in the world.[6] It serves over 24 million passengers every year, and is located on San Diego Bay three miles (4.8 km) from downtown. There are scheduled flights to the rest of the United States, Canada, Japan, Mexico, United Kingdom, Germany, and Switzerland. It serves as a focus city forSouthwest Airlines andAlaska Airlines. Voters rejected a proposal to move the airport toMarine Corps Air Station Miramar in November 2006.[7]
Since December 9, 2015, theCross Border Xpress terminal inOtay Mesa has given direct access toTijuana International Airport, with passengers walking across theMexico–United States border on a footbridge to catch their flight on the Mexican side. It is the only airport in the world with terminals located on the territory of two countries.
Other airports includeBrown Field Municipal Airport andMontgomery-Gibbs Executive Airport.
ThePort of San Diego manages the maritime operations of San Diego harbor. Cruise ships arrive and depart from San Diego's cruise ship terminal on B Street Pier.Carnival Cruise Lines andHolland America have home port cruise ships in San Diego during the winter season. A second cruise terminal onBroadway Pier opened in 2010.
San Diego is home to General Dynamics'National Steel and Shipbuilding Company (NASSCO), the largest shipyard on theWest Coast of the United States.[8] It is capable of building and repairing large ocean-going vessels. The yard constructs commercial cargo ships and auxiliary vessels for the U.S. Navy and Military Sealift Command, which it has served since 1960.
Thestreets and highways of San Diego reflect theautomotive city development as well as its "urban sprawl" historic growth pattern. Major freeways were built and repeatedly expanded to serve the needs of commuters[9] coming into the city from the suburban regions ofNorth County,South Bay, andEast County, as well as theTijuana metropolitan area. The importance of tourism to the city also stimulated the development of roads, since 70% of tourists visiting San Diego arrive by car.[10]
San Diego is the terminus of three primary interstate highways. The region is also served by one three-digit auxiliary interstate.
.svg) | Interstate 5 San Diego Freeway | Interstate 5 begins at theU.S.-Mexico border and heads north throughdowntown and the coastal portion of the city, continuing throughNorth County toLos Angeles. |
.svg) | Interstate 8 Ocean Beach Freeway Kumeyaay Highway | Interstate 8 has its western terminus at the intersection with Sunset Cliffs Boulevard inOcean Beach, and heads east throughMission Valley and San Diego's eastern suburbs before heading throughEast County to theImperial Valley andArizona. |
.svg) | Interstate 15 Escondido Freeway | Interstate 15 begins at I-8 in Mission Valley. It heads northeast through the city's inland suburbs before continuing through theInland Empire toLas Vegas. |
.svg) | Interstate 805 Jacob Dekema Freeway | Interstate 805 is abypass of Interstate 5 that begins just north of the Mexican border inSan Ysidro and rejoins I-5 nearDel Mar, at an intersection known as "The Merge". |
State highways in San Diego include the following:
 | State Route 11 | SR 11 is a short freeway, running from the SR 125/SR 905 interchange east to its current terminus at Enrico Fermi Drive in Otay Mesa. In the future SR 11 will extend east as a toll road to theOtay Mesa East Port of Entry. |
 | State Route 15 Escondido Freeway | SR 15 is a continuation of I-15, running from the I-8/I-15 interchange south to I-5 inSoutheast San Diego near the32nd Street Naval Station. |
 | State Route 52 San Clemente Canyon Freeway Mount Soledad Freeway | SR 52 connectsLa Jolla withEast County throughSantee andSR 125. |
 | State Route 54 South Bay Freeway Jamacha Boulevard | SR 54 begins at I-5 inNational City, then travels northeast to SR 125 nearSpring Valley. SR 54 then continues northeast on Jamacha Road toEl Cajon. |
 | State Route 56 Ted Williams Freeway | SR 56 connects I-5 with I-15 throughCarmel Valley andRancho Peñasquitos. |
 | State Route 67 San Vicente Freeway | SR 67 runs north away from I-8 and El Cajon towards Lakeside, where it becomes a smaller road and continues north towards Ramona. |
 | State Route 75 San Diego-Coronado Bridge Silver Strand Boulevard Palm Avenue | SR 75 spansSan Diego Bay as theSan Diego-Coronado Bridge, then heads south along theSilver Strand fromCoronado toSouth San Diego, where it becomes Palm Avenue |
 | State Route 78 San Pasqual Valley Road | SR 78 is present within the city limits of San Diego from San Pasqual Road to Guejito Truck Trail. SR 78 continues west toEscondido andOceanside and the eastern continuation heads towardBrawley inImperial County and up toI-10 nearBlythe inRiverside County. |
 | State Route 94 Martin Luther King Jr. Freeway Campo Road | SR 94 connectsdowntown with I-805, SR 15, andEast County. |
 | State Route 125 South Bay Expressway | SR 125 connects East County cities from SR 905 near theOtay Mesa Port of Entry north toSantee. The segment of SR 125 from SR 11 and SR 905 to SR 54 is a toll road, the South Bay Expressway. |
 | State Route 163 Cabrillo Freeway Dean E. Beattie Memorial Highway | SR 163 connectsdowntown with the northeast part of the city, intersects I-805 and merges with I-15 atMiramar. The stretch of SR 163 that passes throughBalboa Park is San Diego's oldest freeway, and has been called one of America's most beautiful parkways.[11] |
 | State Route 905 Otay Mesa Freeway | SR 905 connects I-5 and I-805 to theOtay Mesa Port of Entry. |
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