All across America, city buses are waiting. Waiting at stoplights, waiting behind long lines of cars, waiting to pull back into traffic, waiting at stops for growing crowds of passengers. And no, it’s not just your imagination: Buses are doing more waiting, and less moving, than they used to. A recent survey of 11 urban transit systems conducted by Daniel Boyle for the Transportation Research Board found that increased traffic congestion is steadily eroding travel speeds: The average city bus route gets 0.45 percent slower every single year. That’s especially discouraging given how slowly buses already move, with a typical bus averaging only 13.5 mph.
Transit agencies are taking action against the waits. A recent report on “Commonsense Approaches for Improving Transit Bus Speeds“ surveyed not just the scale of the problem, but also solutions. In it, 59 transit agencies across America shared how they have responded to the scheduling problems presented by ever-slower bus routes. The agencies report on the most successful actions they’ve taken to improve bus speeds and reliability. Here they are, listed in descending order of popularity.
- Consolidate stops: More than half of agencies have thinned bus stops, some by focusing on pilot corridors, and others by gradually phasing in policy changes. Many agencies moved stops to far side of intersections at stoplights, and 13 agencies adopted physical changes like longer bus stops or bulb-outs, which help passengers board faster and more conveniently.
- Streamline routes: Straightening out routes, trimming deviations, eliminating duplication, and shortening routes didn’t just simplify service, it also sped up service for two-thirds of the agencies that tried this approach.
- Transit signal priority: The 22 agencies with signal priority can change stoplights for approaching buses. They mostly report a minor to moderate increase in bus speeds as a result. In fact, agencies singled out traffic engineering approaches like TSP as the closest to a “silver bullet,” one-step solution.
- Fare policy: Several agencies changed fare structures or payment methods. The one agency that collects fares before passengers board, and lets them board at both bus doors, decreased bus running times by 9 percent.
- Bus Rapid Transit: Ten agencies combined multiple approaches on specific routes and launched BRT service. Of those that measured the impact, almost all reported a significant increase in speed, typically around 10 to 15 percent.
- Vehicle changes: More than half of agencies have moved to low-floor buses, which reduce loading times by one second per passenger. Smaller buses might be more maneuverable in traffic, and ramps can speed loading for wheelchairs and bicycles.
- Limited stop service: Although new limited-stop services offered only minor to moderately faster speeds, it’s a simple step and 18 agencies reported launching new limited routes.
- Bus lanes: Dedicated lanes are used by 13 agencies, and one reported that “most routes are on a bus lane somewhere.” When implemented on wide arterial streets, this moderately improves speeds.
- Adjust schedules: Almost all of the surveyed agencies have adjusted running time, recovery times (the time spent turning the bus), or moved to more flexible ”headway schedules.” All of these actions improve on-time performance reliability for customers, and reduce the need for buses to sit if they’re running early.
- Signal timing: Synchronized stoplights along transit routes can make sure that buses face more green lights than red, but only have a mild impact on operating speeds.
- Express service on freeways: This strategy had the largest impact on speeding up buses for the three agencies that tried it.