What to expect on your Wednesday morning commute:

— A portion of Georgetown Pike in the Great Falls area of Fairfax County remains closed this morning as crews work to clear a tree from the roadway. The tree fell last night, landing on a car and fatally pinning the driver as he waited in traffic. A singe lane of Georgetown Pike will be temporarily opened during the morning rush hour, but drivers are urged to avoid the area if possible.

— With soaring temperatures predicted again today, Metro may impose speed restrictions on trains. The slowdown would happen if the mercury tops 100 degrees, officials said. On Tuesday, the transit agency slowed travel on above-ground tracks to 35 mph but lifted the heat restriction at 7 p.m. Metro will also allow riders to bring water bottles on buses and trains to stay cool and hydrated.

— An escalator at Smithsonian Metro Station is out of service after a young Canadian tourist became trapped Tuesday night. The 14-year-old boy’s hand got stuck between a comb and a step as he unsuccessfully tried to free his flip-flop, which had become jammed into the comb at the bottom of the escalator.

Tell us what you’re seeing on the roads and rails in the comments below or tweet @drgridlock.