Transit nerds rejoice: one of the nation’s biggest transportation conferences is coming to Pittsburgh. Rail~Volution is taking over three days at Downtown’s Wyndham Grand Hotel, providing the kind of transit insight and wonkery that planners, advocates, and urbanists can only dream of. Want to learn the pros and cons of on-demand bikes and scooters for last-mile connections? You’re covered. Want to talk about dedicated bus lanes and their effect on parking and congestion? You’re covered. Bus-network guru Jarett Walker will be in attendance, as will regional transportation leaders like Port Authority’s Katharine Eagan Kelleman. Get on your bike or catch the bus or light-rail to Downtown. You can drive too, if you must, but expect to be shunned. Continues through October 24.