No vehicle shall be driven to the left side of the center of the roadway in overtaking and passing another vehicle proceeding in the same direction unless such left side is clearly visible and is free of oncoming traffic for a sufficient distance ahead to permit such overtaking and passing to be completely made without interfering with the safe operation of any vehicle approaching from the opposite direction. In every event the overtaking vehicle must return to an authorized lane of travel as soon as practicable.
Structure Delaware Code
Subchapter III. Driving on Right Side of Roadway; Overtaking and Passing, etc.
§ 4114. Driving on right side of roadway; exceptions.
§ 4115. Passing vehicles proceeding in opposite directions.
§ 4116. Overtaking a vehicle or bicycle on the left.
§ 4117. When overtaking on the right is permitted.
§ 4118. Limitations on overtaking on the left.
§ 4119. Further limitations on driving to left of center of roadway.
§ 4120. No-passing zones; exceptions.
§ 4121. One-way roadways and rotary traffic islands.
§ 4122. Driving on roadways laned for traffic.
§ 4123. Following too closely.