delivered the opinion of the Court.
Though recent Acts of Congress have made substantial changes in the regulation of interstate motor carriers, see Negotiated Rates Act of 1993, 107 Stat. 2044; Trucking Industry Regulatory Reform Act of 1994, 108 Stat. 1683, this case arises under the law in effect before those enactments. We address once again the Interstate Commerce Act’s filed rate requirements, 49 U. S. C. §§ 10761(a), 10762(a)(1), and *140 their bearing on the authority of the Interstate Commerce Commission (ICC) to enforce related provisions of the Act and regulations adopted under it.
Under the filed rate doctrine applicable to the transactions here in question, motor carriers were required to publish their shipping rates in tariffs filed with the ICC and to rеceive only the published rates.
Ibid.
Our cases have taught the necessity of strict compliance with this scheme.
E. g., Maislin Industries, U. S., Inc.
v.
Primary Steel, Inc.,
I
Transcon Lines (Transcon) was once the 12th largest motor carrier in the United States, operating under authorization from the ICC. Like many other carriers, Transcon became a victim of the heightened competition resulting from Congress’ partial deregulation of the motor carrier industry in 1980. See Motor Carrier Act of 1980, 94 Stat. 793. In May 1990, Transcon consented to an order for relief pursuant to an involuntary bankruptcy petition filed against it under Chapter 11. The trustee appointed by the Bankruptcy Court followed the practice of some other trustees for the estates of bankrupt carriers and sought to collect undercharges from Transcon’s former customers. The trustee sought not only to collect unpaid freight charges but also to collect liquidated damages for late payment. Some 3,000 adversary proceedings brought by the trustee against Transcon’s former customers are pending, and the ICC estimates the liquidated damages in quеstion total about $15 million.
*141 The Act bars common carriers subject to the ICC’s jurisdiction from extending credit for their services except “fu]nder regulations of the [ICC] governing the payment for transportation and service and preventing discrimination.” 49 U. S. C. §§ 10743(b)(1), 10743(a). By regulations under this express statutory delegation, the ICC has set out in detail the exclusive means by whiсh common carriers can extend credit to shippers. See 49 CFR pt. 1320 (1994). Under the regulations, carriers are authorized to establish credit periods of up to 30 calendar days, §§ 1320.2(c), (d), and, if shippers fail to pay their charges within the established credit period, to assess service (or interest) charges, § 1320.2(e). Carriers also may assess liquidated damages to cover collection costs, either by a tariff rule or through contract terms in their bills of lading. §§ 1320.2(g)(1), (3). Before collecting liquidated damages by tariff rule, however, a carrier must follow specified procedural requirements.
First, the timing and conditions of any potential liquidated damages must be described clearly in the carrier’s filed tariff. § 1320.2(g)(2)(i). Second, the original bill sent to the shipper must set forth any liquidated damages that would be assessed for failure to make timely payment of the freight charges. § 1320.3(e). Third, within 90 days after expiration of the authorized credit period the carrier must “issu[e] a revised freight bill or notice of imposition of collection expense сharges for late payment.” § 1320.2(g)(2)(vi). Finally, liquidated damages “[s]hall be applied only to the nonpayment of original, separate and independent freight bills and shall not apply to aggregate balance-due claims sought for collection on past shipments by a bankruptcy trustee, or any other person or agent....” § 1320.2(g)(2)(iii).
Upon satisfying these requirements, carriers may assess liquidated damages through a tariff rule by one of two methods. The first is “to assess liquidated damages as a separate additional charge to the unpaid freight bill.” § 1320.2(g)(1) (i). The second is to charge the shipper a “full, nondis- *142 counted rate instead of the discounted rate [that might otherwise be] applicable.” § 1320.2(g)(1)(ii). Transcon used thе second, so-called loss-of-discount method to assess liquidated damages. The measure of liquidated damages under this method is prescribed by an ICC regulation. It provides:
“The difference between the discount and the full rate constitutes a carrier’s liquidated damages for its collection effort. Under this method the tariff shall identify the discount rates that are subject to the condition precedent and which require the shipper to make payment by a date certain.” Ibid.
Transcon’s customers had been charged discount rates, expressed as a percentage of a generic bureau rate. To collect liquidated damages, the trustee demanded the nondiscount bureau rate from former customers who had failed to pay their original discount charges on time.
The ICC sued in the United States District Court for the Central District of California to enjoin the trustee from collecting loss-of-discount liquidated damages. It did not allege that Transcon had failed to state its liquidated damages provisions in its filed tariff. Trаnscon had specified in its “rules tariff” that “discounts ... shall apply only when tariff charges are paid within 90 calendar days from date of shipment.” ICC TCON 103-A, Item 210, 1 Supplemental Excerpts of Record 41. The ICC did assert, though, that Transcon had violated each of the three other liquidated damages requirements set out above. Transcon’s original bills did not аdvise shippers of the consequences of late payment, as required by § 1320.3(c); revised bills were not issued until several years after the 90-day period provided in § 1320.2(g)(2)(vi); and the loss-of-discount provision was being applied by a bankruptcy trustee on an aggregate basis, contrary to § 1320.2(g)(2)(iii). The requested injunction would prohibit the trustee from pursuing clаims in violation of those requirements.
*143
The District Court granted summary judgment for respondents, and the United States Court of Appeals for the Ninth Circuit affirmed in relevant part,
ICC
v.
Transcon Lines,
After the Court of Appeals issued its opinion, we decided
Reiter
v.
Cooper,
*144
On remand, the Court of Appeals adhered to its earlier determination.
We again granted certiorari,
II
Just as
Reiter
was in important respects “a sequel to our decision in
Maislin,”
The Act grants the ICC broad authority to bring civil actions to enfоrce the statute and regulations or orders issued under it. 49 U. S. C. § 11702. As respondents themselves concede, the trustee is attempting in this case to collect liquidated damages in violation of the ICC’s credit regulations. See Brief in Opposition 4-5. To the extent the injunction applies to “a bankruptcy trustee” applying liquidated damages “to aggregate balance-due claims sought for collection on past shipments,” the ICC seeks a prospective bar to the trustee’s violation of 49 CFR § 1320.2(g)(2)(iii) (1994). This aspect of the ICC’s suit is, in effect, a compliance action— the precise relief the Court approved in Commercial Metals. To the extent the ICC seeks to enjoin collection of liquidated damages as a remedy for Transcon’s lack of notification in the original bills, see 49 CFR § 1320.3(e) (1992), and nonissuance of revised bills within 90 days, see § 1320.2(g)(2)(vi), this remedy too is appropriate.
The Court’s observation in
Commercial Metals
that the choice of remedies for violation of its regulations is “best left to the ICC,”
First, its remedy appears to the ICC, and to us, necessary to the effective enforcement of its regulations. See
Commercial Metals, supra,
at 350, 352; see also
Hewitt-Robins Inc.
v.
Eastern Freight-Ways, Inc.,
Second, unlike the credit regulation violated in
Commercial Metals,
which was intended to protect carriers,
In short, whether or not we would allow shippers to defend against a carrier’s collection action by relying on the carrier’s violation of credit regulations, it follows from Commercial Metals and our construction of the controlling statute that thе ICC has the authority and the discretion to determine appropriate remedies for these violations. Where, as here, the remedy involves “a federal-court injunction re *147 quiring a carrier to comply with the regulations,” id., at 349; constitutes a reasonable and necessary means to effect enforcement of the ICC’s credit regulations; and protects the intended benеficiaries of the violated regulations, we believe the injunction is authorized under the Act.
In
Maislin
we concluded the ICC’s policy and its interpretation of the Act were “flatly inconsistent with the statutory scheme as a whole.”
Neither
Maislin
nor our other filed rate cases suggest that the filed rate doctrine prohibits the ICC from rеquiring departure from a filed rate when necessary to enforce other specific and valid regulations adopted under the Act, regulations that are consistent with the filed rate system and compatible with its effective operation. Carriers must comply with the comprehensive scheme provided by the statute and regulations promulgated under it, and their failure to do so may justify departure from the filed rate. In
Reiter,
for example, we confirmed that the filed rate doctrine “assuredly does not preclude avoidance of the tariff rate . . . through claims and defenses that are specifically accorded by the [Act] itself.”
Any remaining doubts as to the appropriateness of the relief sought are dispelled upon close examination of respondents’ particular contеntion that an injunction here would displace the tariff system by substituting a private agreement for the filed rate. This is not so. The charge that cannot be collected is, as respondents themselves concede, Tr. of Oral Arg. 24, the charge for liquidated damages. The ICC has said in a regulation promulgated under the Act that “[t]he difference between the discount and the full rate constitutes a carrier’s liquidated damages for its collection effort.” 49 CFR § 1320.2(g)(l)(ii) (1994); see 49 U. S. C. § 10743(b)(1) (Act authorizes the extension of credit — and therefore any liquidated damages resulting from the extension of credit — only pursuant to ICC regulations). The regulation is entitled to deference as an interpretation of the Act.
Chevron U. S. A. Inc.
v.
Natural Resources Defense Council, Inc.,
Ill
The Act by express terms authorizes the ICC to promulgate credit regulations. It also gives the ICC “the power to seek a federal-court injunction requiring a carrier to comply with [its credit] regulations.”
Commercial Metals,
It is so ordered.
