Austin Transportation staff released a peer-reviewed report enttiled 'Redesigning the Street: A Report on Right-Sizing Projects in Austin.' Right-sizing is a technique that changes the number of lanes on a street to improve the safety and operations of the street for all users. The report describes the evidence base, project selection/initiation, public outreach process, project delivery and impacts of road right-sizing over the last 15 years in Austin. A total of 37 right-sizing projects, including more than 26.4 miles, have been installed since 1999.
- A discussion of the concepts behind right-sizing, namely the concept of wide nodes and narrow links, or the idea that a street’s capacity is predominantly determined by the operations at its stop-controlled intersections (the nodes), not the number of lanes on a street between those intersections (the links).
- An explanation as to how proposed right-sizing projects are evaluated, including the motor vehicle volume thresholds and analysis of intersection operations.
- Confirmation that right-sizing projects significantly reduce high-risk speeding which is a top contributing factor to incapacitating injuries and fatalities, especially among pedestrians.
- Confirmation that Austin’s right-sizing projects see the same or better safety improvements as national studies in terms of reduced crashes. Right-sizing projects on Dean Keaton, Amherst Drive, Kramer Lane and Cameron Road saw crashes go down by nearly a third while a right-sizing project on Manor Road reduced crashes by 38 percent.
- Confirmation that motor vehicle travel time is either maintained or in some cases even reduced and motor vehicle volumes remain comparable before and after the project.