L.A.’s New Light Rail Line Is Luring Angelenos Out of Their Cars

What would it take to get Los Angeles residents to drive less? New research indicates that building light rail is working well.

USC researchers called the changed in travel behavior following the introduction of L.A.'s Expo light rail line "striking." Image: ##http://zev.lacounty.gov/news/transportation/bus-rail/expo-orange-line-ridership-on-a-roll## L.A. County##
USC researchers called the changes in travel behavior following the introduction of L.A.’s Expo light rail line “striking.” Image: ##http://zev.lacounty.gov/news/transportation/bus-rail/expo-orange-line-ridership-on-a-roll##L.A. County##

A study from the University of Southern California of the new Expo light rail line — which opened in two phases last year and runs 8.7 miles west from downtown — found that people living near stations significantly reduced their driving.

USC researchers tracked the travel behavior of 103 subjects living in neighborhoods within one-half mile of a station. The results were compared against another set of people with similar demographic characteristics who live more than a half-mile from a station. Both groups had the same travel habits before the light rail line opened, and no one in either group was told they were participating in a study of the Expo Line.

Researchers called the changes in travel behavior among residents near the new transit line “striking.” After the line opened, households within half a mile of an Expo station drove 10 to 12 fewer miles each day relative to the control group — a reduction of about 40 percent. Those households also reduced their vehicle carbon emissions about 30 percent.

In addition, there was some evidence that the transit investment increased physical activity among nearby residents. The subjects who had the lowest levels of physical activity increased their daily exercise by as much as eight to 10 minutes a day, the study found.

21 thoughts on L.A.’s New Light Rail Line Is Luring Angelenos Out of Their Cars

  1. For out of towners, this is the same line that the “libertarians’ at the Reason Foundation declared a complete failure because it didn’t meet its twenty year ridership projections on its third day of operations.

  2. Maybe someday *gasp* they’ll have it actually go to the LAX airport. That is if the cab companies let them.

  3. Cab companies? In another 5 years it will be Uber and Lyft for the iPhone’d elite. I doubt the cab companies will have much money to lobby against LAX transit then.

  4. Sounds very promising, but I’m confused as the study summary stated that there *might* be a statistically significant increase in rail trips of ~0.1 trips per day. How does one more rail trip every 10 days translate to the equivalent of 10-12 fewer vehicle miles traveled each day? Does each rail trip replace, on average, about 100-120 miles of driving? Or does the mere presence of a rail station lead to fewer miles driving and more miles walking, even if there isn’t that big an increase in trips by rail? If possible, I hope someone who worked on the study can answer.

    From the report summary:
    “In some statistical tests, there is evidence that the Expo Line
    increased rail transit ridership among experimental households. Control
    group households also increased their rail ridership, but not by as much
    as experimental households. On net, the differences-in-differences
    evidence suggests that the Expo Line resulted in about 0.1 more daily
    train trips per household in the experimental group, but we caution that
    this result is not nearly as robust as the finding for VMT reduction
    among experimental group households.”

  5. Why do people keep claiming that cabs had something to do with this? The Green Line was built by stringing together a right-of-way from the newly constructed 105 and the Harbor Subdivision right-of-way. That’s why it goes “from nowhere to nowhere” in the popular saying.

    They put the station as close as possible to the airport given that right-of-way. Trying to bring the line to the terminal would have required a massive construction project that would have been much more expensive per-mile than anything else on the project, and would also have increased travel times between the Harbor Subdivision stops and the 105 stops by a large amount.

    Now maybe they should have done that, but one doesn’t have to postulate a conspiracy by the all-powerful taxi lobby to think that Los Angeles in 1995 just wasn’t willing to spend the billions of dollars on top of the price they did pay, just to connect the “nowhere” of the Green Line to the airport.

  6. If you dig a bit deeper, you’ll see that the number of minutes per day spent walking increased significantly, and so did the number of bike trips per day.

    Given the numbers, it also looks like the average car trip decreased from 8.7 miles to 6.9 miles, though this decrease may not be statistically significant and may be partially constituted by random variation in the sample. (For the control group, the average number of car trips also decreased, but the average number of vehicle miles traveled increased, which suggests some significant random variability.)

  7. Right – I noticed the increase in bike trips too. I’m guessing that might be caused by other variables, like the significant increase of bikeway miles that LA has put in. From my scan of the report, I didn’t see any mention of this. The decrease in VMT is great, but I think the report authors need to be careful what they attribute it to. To insinuate the light rail is solely responsible for the drop in VMT doesn’t seem totally accurate. Or maybe I missed something from the report.

  8. Not entirely true. There’s a still-visible wye-junction that was intended to serve the airport, but it was killed for “various” reasons. This will actually be incorporated into the Crenshaw line, which will have a station on Century / Aviation.

  9. No, that was what Reason actually compared their “data” to. (IE – a guy counting people on trains on day 3)

  10. It’s more complicated than that. The spur to LAX was supposed to be done concurrently with a near complete rebuild of the airport. That rebuild still hasn’t happened, and airport transit continues to be terrible.

  11. The Expo Line includes a continuous bikeway (some bike lanes and some bike path rail-with trail) along its length – so that helps to increase cycling – as well as acting as a feeder for the rail. L.A.’s Cycling activists fought hard to keep the bikeway project included with the rail project (especially when rail project engineers thought that the bikeway might be “not feasible” mostly due to additional turn lanes and road widening planned – crazy that road-widening would be part of rail construction… but that still happens in L.A.)

  12. I think they’re actually very careful to control for a lot of this. These differences that we’re talking about also compare the changes over the same time period between people who live within 1/2 mile of Expo and people who live farther from Expo and closer to Crenshaw. It may be true that bikeways were improved more along Expo than they were in the other study areas, but at any rate it’s not just an artifact of the citywide improvement in bikeways.

  13. This is also a case where the Expo Line connects to many destinations along the line which is key to reduction of car trips and improved physical activity to the corridor.

    USC, the Museums in Exposition Park, the Coliseum (to watch UCLA beat the pants out of USC this year) are destinations along the corridor that will directly correlate to the reduction of car trips because there’s no an alternative to get there.

  14. agreed, it’s important to remember that transit is only as beneficial as the destinations it serves and the quality of service provided. contrast the success of the Expo line to the performance of the Blue line soon after its construction (as described in the first article of this PDF, “There’s no there there”: http://www.uctc.net/access/access09lite.pdf ). this important and seemingly obvious point is somehow forgotten in lots of transit discourse as cities insist on building rail lines connecting nowhere to nowhere (or parking lot to parking lot)

  15. I’m just imagining how the Reason Foundation people get around … giant 1970s land-yachts belching smoke…?

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