Two construction workers stand outside of their vehicle on the side of the highway.
two construction workers are standing by the highway
Standing by the highway implies being outside of a vehicle and on the side of the highway.
exists e1 x1 x2 x3 x4 x5.(n_highway(x5) & n_side(x4) & of(e1,x3) & on(x3,x4) & of(x4,x5) & n_vehicle(x3) & of(x3,x1) & n_thing(x1) & r_outside(e1) & Actor(e1,x1) & v_stand(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_highway(x3) & by(e1,x3) & Actor(e1,x1) & v_stand(e1) & n_worker(x1) & of(x1,x2) & n_construction(x2) & card_eq_2(x1))