"To match the speed" means to go or move at the same pace as someone or something. It implies keeping up with or staying synchronized with another person or object in terms of how fast they are moving. Full definition
This one was equipped with adaptive cruise control, which matches the speed of slower traffic up ahead and can bring the car to a full stop if needed. (cnet.com)
I'm disappointed this car doesn't have adaptive cruise control, a system which automatically matches speeds with slower traffic ahead. (cnet.com)
, which was noticeable almost right from the first mission, is that your tank does not match the speed of the bugs. (cogconnected.com)