Donald Shoup, distinguished research professor of urban planning, authored a Bloomberg CityLab article about the slow progress to repair broken sidewalks in Los Angeles. Roughly 40% of L.A. sidewalks are broken, a violation of the Americans With Disabilities Act, according to a 2016 class-action lawsuit won by disability rights advocates. Los Angeles is required to spend $1.4 billion over 30 years to fix its sidewalks, but in the first five years of the program, less than 1% have been repaired. “Fortunately, there’s a simple way to ensure that sidewalks will be accessible,” Shoup wrote. “Cities can require that the sidewalk abutting any property must comply with the Americans With Disabilities Act when the property is sold.” Property owners would not have to pay or do anything until they sell their property, and the city can subsidize sidewalk repairs for low-income owners. “A pay-on-exit program may be the fairest and most politically painless way to keep sidewalks accessible,” Shoup concluded.