Speed

Basis for a Speed Law Violation:

Basic Speed Rule:

No person shall drive a vehicle at a speed greater than is reasonable and prudent under the conditions and without having regard to the actual and potential hazards then existing. Speed shall be so controlled as to avoid a collision.
Title 21, '4168(a)

Statutory Speed Limit:

65 MPH on all portions of Delaware State Route 1 located between the Red Lion Creek and the Appoquinimink River. Any speed in excess of this limit is absolute evidence  that the speed is not reasonable or prudent and that it is unlawful.
Title 21, '4169(d)

55 MPH on 4 lane roadways and divided highways
Title 21,See Other below. '4169(a)(1)e

50 MPH on 2 lane roadways
Title 21, '4169(a)(1)d

25 MPH in either a business or residential district
Title 21, '4169(a)(1)a & (a)(1)b

20 MPH at school crossings where signs are in effect during specific time periods
Title 21, '4169(a)(1)c

Posted (Maximum) Speed Limit:

I. Based on engineering studies and traffic investigations, the State Department of Transportation may increase or decrease the above speed limits on any particular portion of a highway.
Title 21, '4169(b)

II. Based on engineering studies and traffic investigations, local authorities, within their respective jurisdictions, may increase or decrease the above speed limits on any particular portion of a highway. However, the alteration of speed limits on State maintained highways requires the approval of the Department of Public Safety.
Title 21, '4170(b) & (b)

Minimum Speed Limit:

I. A person shall not operate a motor vehicle at such a slow speed as to impede the normal and reasonable movement of traffic.
Title 21, '4171(a)

II. A person, driving at less than the normal speed of traffic, shall drive in the right-hand lane then available for traffic or as close as practicable to the right-hand curb or edge of the roadway.
Title 21, '4114(b)

Posted (Minimum) Speed Limit:

A minimum safe speed limit on a highway (or a part thereof) may be established.
Title 21, '4171(b)

Other:

No person shall exceed the maximum posted speed limit which has been established for any bridge or elevated structure.
Title 21, '4173(a)

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