Incident occurred on 3/7 at 13:33Z. KDCA was using runways 1 and 33 for departures.
Republic E75L was cleared by ground controller to “cross 4 at J, monitor tower.” ADS-B data shows that the E75L actually turned left from J onto F and proceeded across runways 1 and 4, heading to runway 33. The original taxi instruction would have taken it to runway 1. The E75L eventually departed runway 33.
The United A319 on runway 1 was issued “cancel takeoff clearance” immediately after completing its takeoff clearance read back and exited at A. ADS-B data shows the United A319 never accelerated beyond taxi speed. The United A319 initiated a successful takeoff on runway 1 about 5 minutes later.
At the time of the rejected takeoff the distance between the A319 and the E75L was at least 2000 feet.