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TABLE C-1 Travel Time Index by Metro Area: 1982 to
2005
The Travel Time Index (TTI) is the ratio of peak period
travel time to free-flow travel time. It expresses the average amount of
extra time it takes to travel in the peak period relative to free-flow
travel.
Excel | CSV
| Chicago, IL-IN |
1.12 |
1.31 |
1.44 |
1.47 |
| San Diego, CA |
1.07 |
1.22 |
1.41 |
1.40 |
| Riverside-San
Bernardino, CA |
1.03 |
1.19 |
1.35 |
1.35 |
| Dallas-Fort
Worth-Arlington, TX |
1.05 |
1.16 |
1.31 |
1.35 |
| New
York-Newark, NY-NJ-CT |
1.10 |
1.24 |
1.36 |
1.39 |
| Miami, FL |
1.11 |
1.26 |
1.37 |
1.38 |
| Sacramento, CA |
1.06 |
1.21 |
1.32 |
1.32 |
| San
Francisco-Oakland, CA |
1.15 |
1.35 |
1.38 |
1.41 |
| Los
Angeles-Long Beach-Santa Ana, CA |
1.25 |
1.44 |
1.48 |
1.50 |
| Washington,
DC-VA-MD |
1.12 |
1.32 |
1.37 |
1.37 |
| Atlanta, GA |
1.10 |
1.25 |
1.32 |
1.34 |
| Austin, TX |
1.07 |
1.18 |
1.29 |
1.31 |
| Denver-Aurora,
CO |
1.09 |
1.22 |
1.30 |
1.33 |
| Las Vegas, NV |
1.06 |
1.25 |
1.31 |
1.30 |
| Baltimore, MD |
1.07 |
1.20 |
1.29 |
1.30 |
| Seattle, WA |
1.07 |
1.30 |
1.28 |
1.30 |
| Minneapolis-St.
Paul, MN |
1.04 |
1.18 |
1.24 |
1.26 |
| Portland,
OR-WA |
1.07 |
1.20 |
1.27 |
1.29 |
| Charlotte,
NC-SC |
1.07 |
1.13 |
1.25 |
1.23 |
| Oxnard-Ventura,
CA |
1.03 |
1.12 |
1.22 |
1.24 |
| San Jose, CA |
1.13 |
1.25 |
1.32 |
1.34 |
| Orlando, FL |
1.10 |
1.27 |
1.30 |
1.30 |
| Boston,
MA-NH-RI |
1.08 |
1.20 |
1.27 |
1.27 |
| San Antonio,
TX |
1.04 |
1.10 |
1.23 |
1.23 |
| Houston, TX |
1.19 |
1.19 |
1.32 |
1.36 |
| Bridgeport-Stamford,
CT-NY |
1.06 |
1.16 |
1.21 |
1.22 |
| Columbus, OH |
1.03 |
1.15 |
1.20 |
1.19 |
| Detroit, MI |
1.13 |
1.26 |
1.30 |
1.29 |
| Philadelphia,
PA-NJ-DE-MD |
1.12 |
1.18 |
1.27 |
1.28 |
| Phoenix, AZ |
1.15 |
1.17 |
1.27 |
1.31 |
| El Paso, TX-NM |
1.02 |
1.07 |
1.16 |
1.17 |
| Cincinnati,
OH-KY-IN |
1.04 |
1.06 |
1.18 |
1.18 |
| Indianapolis,
IN |
1.08 |
1.24 |
1.23 |
1.22 |
| Jacksonville,
FL |
1.07 |
1.20 |
1.22 |
1.21 |
| Raleigh-Durham,
NC |
1.01 |
1.11 |
1.17 |
1.18 |
| Salt Lake
City, UT |
1.05 |
1.19 |
1.21 |
1.19 |
| Providence,
RI-MA |
1.03 |
1.08 |
1.17 |
1.16 |
| Tucson, AZ |
1.10 |
1.13 |
1.22 |
1.23 |
| Albuquerque,
NM |
1.05 |
1.16 |
1.16 |
1.17 |
| Colorado
Springs, CO |
1.02 |
1.07 |
1.12 |
1.14 |
| Louisville,
KY-IN |
1.11 |
1.17 |
1.23 |
1.23 |
| Omaha, NE-IA |
1.04 |
1.11 |
1.16 |
1.16 |
| Birmingham, AL |
1.04 |
1.09 |
1.15 |
1.15 |
| Honolulu, HI |
1.11 |
1.21 |
1.20 |
1.22 |
| Virginia
Beach, VA |
1.07 |
1.16 |
1.18 |
1.18 |
| Charleston-North
Charleston, SC |
1.08 |
1.14 |
1.18 |
1.17 |
| Memphis,
TN-MS-AR |
1.04 |
1.11 |
1.14 |
1.13 |
| Sarasota-Bradenton,
FL |
1.10 |
1.15 |
1.19 |
1.19 |
| St. Louis,
MO-IL |
1.07 |
1.18 |
1.16 |
1.16 |
| Allentown-Bethlehem,
PA-NJ |
1.06 |
1.14 |
1.14 |
1.14 |
| Bakersfield,
CA |
1.01 |
1.04 |
1.08 |
1.09 |
| Hartford, CT |
1.03 |
1.08 |
1.11 |
1.11 |
| Milwaukee, WI |
1.05 |
1.13 |
1.13 |
1.13 |
| Nashville-Davidson,
TN |
1.09 |
1.13 |
1.17 |
1.17 |
| New Haven, CT |
1.03 |
1.08 |
1.10 |
1.11 |
| Pensacola,
FL-AL |
1.03 |
1.08 |
1.11 |
1.11 |
| Tampa-St.
Petersburg, FL |
1.20 |
1.30 |
1.29 |
1.29 |
| Fresno, CA |
1.05 |
1.11 |
1.12 |
1.12 |
| Grand Rapids,
MI |
1.03 |
1.09 |
1.11 |
1.10 |
| Laredo, TX |
1.02 |
1.06 |
1.09 |
1.09 |
| Oklahoma City,
OK |
1.02 |
1.07 |
1.09 |
1.09 |
| Salem, OR |
1.02 |
1.07 |
1.09 |
1.19 |
| Toledo, OH-MI |
1.02 |
1.07 |
1.10 |
1.09 |
| Albany-Schenectady,
NY |
1.02 |
1.04 |
1.08 |
1.08 |
| Boulder, CO |
1.04 |
1.09 |
1.09 |
1.10 |
| Cleveland, OH |
1.03 |
1.11 |
1.10 |
1.09 |
| Eugene, OR |
1.04 |
1.04 |
1.08 |
1.10 |
| Kansas City,
MO-KS |
1.02 |
1.07 |
1.08 |
1.08 |
| Tulsa, OK |
1.03 |
1.07 |
1.09 |
1.09 |
| Akron, OH |
1.02 |
1.06 |
1.08 |
1.07 |
| Buffalo, NY |
1.03 |
1.04 |
1.08 |
1.08 |
| Cape Coral, FL |
1.07 |
1.15 |
1.12 |
1.12 |
| Columbia, SC |
1.02 |
1.04 |
1.07 |
1.07 |
| Little Rock,
AK |
1.02 |
1.04 |
1.07 |
1.07 |
| Richmond, VA |
1.04 |
1.09 |
1.09 |
1.09 |
| Rochester, NY |
1.02 |
1.05 |
1.07 |
1.07 |
| Brownsville,
TX |
1.02 |
1.04 |
1.07 |
1.06 |
| New Orleans,
LA |
1.11 |
1.16 |
1.15 |
1.15 |
| Beaumont, TX |
1.02 |
1.03 |
1.05 |
1.05 |
| Corpus
Christi, TX |
1.03 |
1.04 |
1.05 |
1.06 |
| Dayton, OH |
1.07 |
1.12 |
1.11 |
1.10 |
| Pittsburgh, PA |
1.06 |
1.10 |
1.10 |
1.09 |
| Spokane, WA |
1.02 |
1.05 |
1.05 |
1.04 |
| Springfield,
MA-CT |
1.04 |
1.06 |
1.06 |
1.06 |
| Anchorage, AK |
1.06 |
1.06 |
1.07 |
1.07 |
| 85-Area
average |
1.11 |
1.22 |
1.29 |
1.30 |
| Very large area average |
1.14 |
1.29 |
1.36 |
1.38 |
| Large area average |
1.07 |
1.18 |
1.24 |
1.24 |
| Medium area average |
1.05 |
1.12 |
1.16 |
1.16 |
| Small area average |
1.03 |
1.07 |
1.09 |
1.09 |
NOTES: Travel time index-The ratio of travel time
in the peak period to the travel time at free-flow conditions. A value of
1.35 indicates a 20 minute free-flow trip takes 27 minutes in the peak.
Free-flow speeds (60 mph on freeways and 35 mph on principal arterials) are
used as comparison thresholds.
Very large urban areas-over 3 million population. Large
urban areas - over 1 million and less than 3 million population. Medium urban
areas-over 500,000 and less than 1 million population. Small urban areas-less
than 500,000 population.
SOURCE: Texas A&M
University, Texas Transportation Institute, 2007 Urban Mobility Report (College Station, TX: 2007), also available at
http://tti.tamu.edu/ as of September 2007.
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