The phrase "about the same speed as" is correct and usable in written English.
It can be used when comparing the speed of two or more objects or entities to indicate that they are similar in speed.
Example: "The new car accelerates about the same speed as the older model, making it a competitive choice."
Alternatives: "roughly the same speed as" or "approximately the same speed as".
Anything that appeared to move at about the same speed as Saturn was analyzed further.
They were all heading in the same direction, literally following the road, at about the same speed as us.
The worst, the M96, traveled at an average of 3.7 miles per hour — about the same speed as a brisk walk.
But the G1 can focus in about a third of a second, about the same speed as other non-live-view S.L.R.'s in this price range.
The Agenda VR3 has a screen capable of showing 16 shades of gray and runs at 66 megahertz, about the same speed as Palm devices.
"Tsunami waves in the deep ocean travel about the same speed as a jet plane and would take about 15 hours to reach Hawaii and about 20 hours to reach the other side of the Pacific," he said.
Finally, synaptic vesicle proteins tagged with pHlourin are recycled in about 15 s, roughly the same speed as membrane recycling observed in ultrastructural experiments (Granseth et al., 2006; Balaji and Ryan, 2007).
After an initial lag (compared to the wild type) of about 60 min, it started swarming at the same speed as the wild type until reaching about one half-distance towards the end of the plate.
This means, according to the statement, that Pistorius was able to run at the same speed as able-bodied sprinters with about "25percentt less energy expenditure".
There's also something involving in learning about the expectations and customs of the 18th-century Japanese world at the same speed as Jacob de Zoet.
The winds then reached the same speed as Hurricane Gonzalo, and caused damage of about $300m £187.3mm).
