The phrase "a common route for" is correct and usable in written English.
It can be used to describe a frequently taken path or method for achieving something, often in the context of travel, processes, or strategies.
Example: "The highway has become a common route for commuters traveling to the city each morning."
Alternatives: "a typical path for" or "a frequent way for".
Police believe Adam may have arrived in England from Germany, a common route for people traffickers.
Transesterification of vegetable oils is a common route for the production of biodiesel.
Sublingual (SL) immunization against infectious agents or bacterial toxins is not a common route for antigen delivery.
Turkey has been a common route for drugs smuggled out of Afghanistan, but American officials said today that Turkish law enforcement agencies have been improving their interdiction efforts.
The state is a common route for drugs and migrants coming from the south on the way up to the United States.
The attacks were not previously disclosed by American officials, who said Friday that they had taken place off the northern Honduran coast, a common route for cocaine traffickers.
Acquiring tobacco from family members was a common route of access for early smoking experimentation, and particularly common for the first puff, which was usually opportunistic and facilitated by the availability of tobacco in the home.
Although not a common route of exposure for poisons, injection is the only route in which the entire amount exposed is absorbed regardless of the chemical administered, because the chemical is introduced directly into the body.
We suspected this plastic food packaging to be a common route of exposure for BP3 and phthalates, therefore explaining the correlation found between both chemicals classes.
Consumption data suggest that a common route of MeHg exposure for most Americans is canned tuna (Sunderland 2007).
Apprenticeships once a common route into the workplace for young men are rarer than they used to be, a result of the steady decline in manufacturing and craft jobs since the 1970s.
