In Delaware, you must switch from high beams when following another vehicle within:
Correct answer: A. – 200 feet
A driver following another vehicle within 200 feet must use a light distribution other than the uppermost beam, except while overtaking and passing. For an oncoming vehicle, the glare-reduction requirement begins within 500 feet. Properly dimming headlights prevents glare from affecting another driver’s vision.
Source: 21 Del. C. § 4350(1), (2) – Use of multiple beam road lighting equipment


