Start your week off by sending a valentine to New York’s transit system, and then enjoy some intellectual conversation about the future of the taxi and the promise of transit-oriented development.

Today: Happy Valentine’s Day. Join Transportation Alternatives, the Transit Workers Union, WE ACT for Environmental Justice and the Straphanger’s Campaign at three different subway stations to sign a valentine expressing your love for our transit system, which they’ll deliver to Albany. 4:30 p.m.

Tuesday: TLC Commissioner David Yassky sits down with NYU’s Mitchell Moss to discuss the future of taxis in New York City. 8:30 a.m.

Also Tuesday: T.A.’s East Side committee continues to attend local police precinct community councils, this time the East Village’s 9th precinct, and make the case for traffic enforcement targeted at the deadliest road users: dangerous drivers. 7:00 p.m.

Wednesday: Columbia urban planning professor David King talks transit-oriented development, clean air and climate change with NYMTC, New York’s metropolitan planning organization. 12:00 p.m.

Keep an eye on the calendar for updated listings. Got an event we should know about? Drop us a line.