If signs say that you can park but must pay on one section of a street, while parking is illegal until 6:30 pm on another section, do you have to pay on that second section after 6:30?

The 800 block of 17th Street, NW has these parking signs along its length, in this order (plus another one farther to the left, at the corner, which isn’t relevant here).

It’s clear you can’t ever park to the right of the rightmost sign (that’s at the corner). It’s also clear that between the left and middle signs (and to the left of the left sign), you can park from 9:30-4 on weekdays, but have to pay the meter.

You can also park after 6:30 pm in that zone, but have to pay. The 2-hour time limit doesn’t apply, so you can park for 3½ hours, but have to pay $7 to do it.

But what about between the middle and right signs? You can’t park from 7 am to 6:30 pm, and can stand only outside rush hours. Both restrictions expire at 6:30, but the “pay to park” rule seem to only apply left of the middle sign, since the middle sign has a leftward-pointing green arrow.

Drivers probably should have to pay in both zones after 6:30, since it would be a little silly to have half the block be free in the evenings while the other half is not, but at the moment, the signs don’t seem to require that.

On a recent evening, a few drivers tried parking in the apparently-free zone, and an enforcement officer ticketed the 2 cars closest to the middle sign, but not the others, which is particularly odd.

David Alpert is the founder of Greater Greater Washington and its board president. He worked as a Product Manager for Google for six years and has lived in the Boston, San Francisco, and New York metro areas in addition to Washington, DC. He lives with his wife and two children in Dupont Circle.