6.3 Speed Regulation & the Basic Speed Rule

6.3 Speed Regulation & the Basic Speed Rule

[!IMPORTANT] The posted limit is a ceiling, not a permission. RCW 46.61.400(1) operates independently of any sign. A driver travelling at 60 mph in dense fog on a 60 mph highway is violating the basic rule even though the speedometer matches the sign. This is the single most important speed concept to install in a novice, and it is the concept most likely to be tested in scenario form.

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The basic rule

RCW 46.61.400(1): "No person shall drive a vehicle on a highway at a speed greater than is reasonable and prudent under the conditions and having regard to the actual and potential hazards then existing. In every event speed shall be so controlled as may be necessary to avoid colliding with any person, vehicle or other conveyance on or entering the highway in compliance with legal requirements and the duty of all persons to use due care."

Three elements are worth pulling apart with students:

• "Reasonable and prudent under the conditions" - weather, light, surface, traffic density, vehicle load and the driver's own state.
• "Actual and potential hazards" - the word potential extends the duty to hazards not yet visible. A blind crest, a row of parked cars in a residential street, a school letting out.
• "So controlled as may be necessary to avoid colliding" - the operational restatement: you must be able to stop within the distance you can see to be clear.

Statutory maximum limits

RCW 46.61.400(2): "Except when a special hazard exists that requires lower speed for compliance with subsection (1), the limits specified in this section or established as hereinafter authorized shall be maximum lawful speeds":

"The maximum speed limits set forth in this section may be altered as authorized in RCW 46.61.405, 46.61.410, and 46.61.415." Those sections cover establishment of speed limits by the department of transportation, maximum limits on state highways, and alteration by local authorities respectively. Where a limit has been altered and posted, the posted figure controls; the statutory defaults apply where nothing is posted.

The duty to reduce speed

RCW 46.61.400(3) is a separate, affirmative obligation: "The driver of every vehicle shall, consistent with the requirements of subsection (1), drive at an appropriate reduced speed when:

• approaching and crossing an intersection or railway grade crossing;
• approaching and going around a curve;
• approaching a hill crest;
• travelling upon any narrow or winding roadway; and
• when special hazard exists with respect to pedestrians or other traffic or by reason of weather or highway conditions."

Five named circumstances. Have students memorise them as a list, because the statute enumerates them and examination items track the enumeration.

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School and playground crosswalk zones

RCW 46.61.440(1): subject to the basic rule, it is unlawful to operate a vehicle "at a speed in excess of twenty miles per hour ... when passing any marked school or playground crosswalk when such marked crosswalk is fully posted with standard school speed limit signs or standard playground speed limit signs. The speed zone at the crosswalk shall extend three hundred feet in either direction from the marked crosswalk."

RCW 46.61.440(2) allows a county, city or town to create a school or playground speed zone on a highway bordering a marked school or playground, in which 20 mph is the limit. That zone "may extend three hundred feet from the border of the school or playground property; however, the speed zone may only include area consistent with active school or playground use."

RCW 46.61.440(3): a person found to have committed any speed infraction within a school or playground speed zone "shall be assessed a monetary penalty equal to twice the penalty assessed under RCW 46.63.110. This penalty may not be waived, reduced, or suspended."

RCW 46.61.440(5) directs fifty percent of those moneys, along with penalties collected under RCW 46.61.235(5), 46.61.245(2) and 46.61.261(2), into the school zone safety account, spendable only by the Washington Traffic Safety Commission on projects improving school zone safety, pupil transportation safety, and student safety in school bus loading and unloading areas.

Two precision points: the zone is 20 mph, and it is 300 feet in either direction, not 500 or 1,000. And the doubling is mandatory and non-negotiable in court.

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Teaching speed judgement

Speedometer compliance is easy to teach and insufficient. The professional objective is a student who selects speed from the environment.

The "can you stop in what you can see" drill. On a commentary drive, periodically ask: "if a child stepped out at the far edge of what you can see right now, could you stop?" On a curve or crest the answer is often no, which makes RCW 46.61.400(3) concrete rather than abstract.

Speed and stopping distance. Kinetic energy rises with the square of speed, so braking distance roughly quadruples when speed doubles. A student who understands this understands why 25 mph in a residential street is not an arbitrary number. Section 9.4 develops the arithmetic.

The five reduced-speed circumstances as a scan cue. Turn RCW 46.61.400(3) into a spoken checklist during commentary: intersection, crossing, curve, crest, narrow road, hazard. When the student names it, they slow for it.

Speed selection before school zones. Coach the student to reduce before the sign, not at it. The 300-foot zone begins where the sign says it does, and arriving at 35 mph and braking to 20 inside the zone is both an infraction and bad practice.

Never coach speed by traffic flow. "Keep up with traffic" is a common parental instruction and is not a defence. RCW 46.61.400(2) makes posted and statutory limits maximums; other drivers' choices do not alter them.

[!WARNING] Exam traps in this section

• 25 city, 50 county, 60 state highway - the statutory defaults where nothing is posted.
• The basic rule can be violated at or below the posted limit.
• Five enumerated reduced-speed circumstances in RCW 46.61.400(3).
• School and playground zones: 20 mph, 300 feet in either direction.
• The school-zone penalty doubling may not be waived, reduced or suspended.