The Issaquah City Council will return from a monthlong recess tonight to vote on speed limit revisions to four major roads — including a section of Newport Way Northwest where a 4-year-old boy was killed in June.

The council will weigh whether or not to lower speed limits on that road, as well as sections of East Lake Sammamish Parkway, West Lake Sammamish Parkway Southeast and Front Street South.

If the ordinance passes, Newport Way Northwest would downshift from 40 mph to 30 mph from State Route 900 to the western city limits.

East Lake Sammamish Parkway would go from 40 mph to 35 mph from Southeast 51st Street to Southeast Issaquah-Fall City Road.

West Lake Sammamish Parkway Southeast would reduce from 35 mph to 30 mph east of 193rd Place Southeast to the city limits.

Finally, Front Street South would drop from 35 mph to 25 mph beginning a quarter-mile south of Newport Way Northwest to Sixth Avenue Southeast.

Staff of the city of Issaquah’s engineering department made their recommendations following a review of the streets over the summer. According to a summary statement included with the agenda bill, city engineers built their recommendations on considerations of the use of road-adjacent land, driveway density, roadway geometry and the “85th percentile speed” — a calculation of the speed at which 85 percent of drivers travel, on the assumption that most drivers travel in a reasonable and prudent manner.

The city council will hold its regular meeting at 7 p.m. in City Hall South, 135 E. Sunset Way in Issaquah.

Meanwhile, city-hired consultant Transportation Solutions, Inc. continues to study nearly two dozen crosswalks identified as problem spots by residents and city data. That study is expected to conclude by the end of September.