¶ 1. Plaintiff Bridget M. Johnson appeals from an order granting summary judgment in favor of defendant Agency of Transportation (AOT). Plaintiff had sued AOT for damages for injuries she sustained in an automobile accident, arguing that AOT was negligent in failing to provide adequate temporary traffic control during routine traffic signal maintenance. The trial court held that the lawsuit was barred by the discretionary function exception to the Vermont Tort Claims Act, 12 V.S.A. § 5601(e)(1). We affirm.
¶ 2. The following facts are undisputed. At approximately noon on September 10, 2002, AOT traffic signal technician Russell Velander performed routine maintenance work on a master traffic signal controller at the intersection of U.S. Route 7 and Mountain View Drive in Colchester, Vermont. The maintenance was intended to coordinate a series of traffic signals along Route 7. During the maintenance, Velander put the traffic signal at that intersection on manual flash mode. Once turned to manual flash, the traffic signal flashed yellow for motorists traveling on Route 7 and flashed red for motorists traveling on Mountain View Drive. No other traffic control was used during this seventeen-minute interval.
¶ 3. Shortly after Velander set the signal to flashing mode, plaintiff approached the intersection in the south-bound, right-hand lane of Route 7. At the same time, Marguerite Majarían attempted to turn left from Mountain View Drive into a north-bound lane of Route 7. Majarían struck the passenger side of plaintiff’s vehicle, causing serious injury to plaintiff.
¶ 4. Plaintiff brought a negligence suit against AOT, alleging that the accident was caused by Velander’s negligence in: (1) “putting the traffic control signal on flashing red and yellow at this time of day,” i.e., a time of heavy traffic volume; and (2) “failing to provide adequate traffic control during this period of routine maintenance.” The trial court granted AOT’s motion for summary judgment, holding that “a state employee’s decisions as to the time and manner of traffic signal maintenance fall[] within the discretionary function exception to the Vermont Tort Claims Act.” Plaintiff concedes on appeal that the timing of traffic signal maintenance is a discretionary function within the meaning of 12 V.S.A. § 5601(e)(1) but appeals the trial court’s conclusions as to the manner of the maintenance. We review the grant of summary judgment under the same standard as the trial court: we will not affirm unless there are no genuine issues of material fact and the moving party is entitled to judgment as a matter of law. Lane v. State,
¶ 5. The Vermont Tort Claims Act is a limited waiver of the State’s sovereign immunity from suit. 12 V.S.A. § 5601. Pursuant to the Act, the State retains immunity from:
[a]ny claim based upon an act or omission of an employee of*494 the state exercising due care, in the execution of a statute or regulation, whether or not such statute or regulation is valid, or based upon the exercise or performance or failure to exercise or perform a discretionary function or duty on the part of a state agency or an employee of the state, whether or not the discretion involved is abused.
Id. § 5601(e)(1). The discretionary function exception is designed to ensure that courts do not second-guess legislative or administrative policy judgments through tort law. Estate of Gage v. State,
¶ 6. In Searles v. Agency of Transportation,
¶ 7. The Manual on Uniform Traffic Control Devices has been adopted by the State of Vermont as the standard for all traffic control signals within the state. 23 V.S.A. § 1025(a); Fed. Highway Admin., U.S. Dep’t of Transp., Manual on Uniform Traffic Control Devices for Streets and Highways (Millenium ed. 2000) [hereinafter MUTCD], The MUTCD is divided into “Standard[s],” “Guidance,” “Optionfs],” and “Support.” Id. at 1-3 to 1-4. Only the standards are binding on AOT. See id. at 1-3 (defining a “Standard” as “a statement of required, mandatory, or specifically prohibitive practice regarding a traffic control device”). The material in the other three categories is offered for AOT’s consideration, to be used or not at the agency’s discretion. See id. at 1-3 to 1-4 (defining “Guidance” as “a statement of recommended, but not mandatory, practice”; an “Option” as “a statement of practice that is a permissive condition and carries no requirement or recommendation”; and “Support” as “an informational statement that does not convey any degree of mandate”).
¶ 8. When maintenance work disrupts the normal flow of traffic, the MUTCD grants AOT considerable discretion to determine what type of temporary traffic control is necessary. The standard in
¶ 9. Plaintiff argues that the MUTCD specifically required Velander to consider the volume of traffic, the complexity of the intersection, and road user safety before choosing to employ flashing lights as a temporary traffic control. Plaintiff points to the standard in § 6B.01, which states that “[t]he control of road users through a temporary traffic control zone shall be an essential part of ... maintenance operations.” Id. § 6B.01. However, plaintiff loads more upon the MUTCD than it can bear. The provision relied upon by plaintiff merely suggests that AOT employees “will have to make discretionary judgments about how to apply concretely the aspirational goal embedded in the statement.” Shansky v. United States,
¶ 10. We turn next to the question of whether the choice of temporary traffic controls is “grounded in the policy of the regulatory regime.” Id. at 325. When, as here, a regulation authorizes a government employee to exercise discretion, “it must be presumed that the agent’s acts are grounded in policy when exercising that discretion.” Lane,
¶ 11. Furthermore, plaintiff’s argument misses the mark because “[w]hat matters is not what the decisionmaker was thinking, but whether the type of decision being challenged is grounded in social, economic, or political policy.” Cope v. Scott,
¶ 12. Plaintiff argues, however, that negligence that results from the lack of care or attention is not immunized. She relies on Andrulonis v. United States,
¶ 13. We acknowledge some difficulty in discerning the scope of the Gaubert test and whether it adequately protects the interests of citizens injured by the acts of government employees. See, e.g., Andrulonis,
[a] dock foreman’s decision to store bags of fertilizer in a highly compact fashion is not protected by this exception because, even if he carefully calculated considerations of cost to the Government vs. safety, it was not his responsibility to ponder such things; the Secretary of Agriculture’s decision to the same effect is protected, because weighing those considerations is his task.
Id. at 335-36. Velander’s choice of temporary traffic controls was more than a ministerial maintenance decision because it is his responsibility to “ponder such things” as worker safety and road user safety. The MUTCD vests the responsibility for temporary traffic control in “a public body or official having jurisdiction for guiding road users.” MUTCD § 6A.01 (emphasis added). The parties do not dispute that Velander covers traffic signal maintenance statewide as the only Level Three (the highest designation) traffic signal technician in the state. These job duties “regularly require[] judgment as to which of a range of permissible courses is the wisest.” Gaubert,
Affirmed.
