The phrase "across traffic" is correct and usable in written English.
It can be used when describing movement or action that involves crossing a roadway or area where vehicles are moving in different directions.
Example: "The pedestrian waited for a break in the cars before attempting to walk across traffic."
Alternatives: "through traffic" or "over traffic".
It's quite exciting, the first time you're turning left across traffic and realize it can do that.
There's only one traffic signal here, and locals know high season has arrived when turning left across traffic at every other intersection becomes nearly impossible.
There was a trend whereby drivers accepted shorter gaps when turning across traffic compared to merging with traffic, which was significant at longer gaps (⩾9 s) but not at shorter, safety critical gaps (⩽8 s).
If you're turning left across traffic, you can really nail the throttle and count on the car to sling itself through the gap with no gut-wrenching stability-control stumble to interrupt your trajectory just as the grille of a Ford F-250 looms in your side window.
She and Paolo held the gaze, across traffic, through the windshield, as if time had gelled.
Cutting a few seconds off your trip by cutting across traffic is never a good idea.
This is because a car turning across the traffic often will not check for traffic going in the opposite direction, including your bicycle.
The hot climate, particularly in summer, can allow rapid growth of pathogens in foods, especially where refrigeration is not available as in home-prepared lunches by workers and during transportation of foods across traffic-congested cities.
Florida panthers used to wander across the traffic lanes of Alligator Alley.
It can now take an hour to get across; recently traffic was snarled up for seven hours on Winston Churchill Avenue.
A young journalist came across some traffic policemen engaged in the odd pursuit of drying out banknotes at the roadside.
