# 75 Pa.C.S. § 4904: Limits on number of towed vehicles > Pennsylvania · Statutes · In force URL: https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4904 ## Section - **Citation:** 75 Pa.C.S. § 4904 - **Heading:** Limits on number of towed vehicles - **Jurisdiction:** Pennsylvania - **Kind:** Statutes - **Status:** In force - **Text as of:** August 14, 2026 - **Source:** Compiled text - **Location:** Pennsylvania Code / Title 75 / Chapter 49 / Section 4904 ## Text (a) General rule.--No motor vehicle shall be operated upon a highway towing more than one other vehicle except as otherwise provided in this section. (b) Farm tractors.--Farm tractors may tow no more than two other vehicles when engaged in agricultural operations. (c) Towing vehicles requiring service.-- (1) A dolly not exceeding ten feet in length may be towed by a motor vehicle for the purpose of towing another vehicle requiring service. (2) A combination requiring emergency service may be towed to a nearby garage or other place of safety. (d) Saddle-mount operations.--Not more than three truck tractors, empty trucks or chassis therefor, may be towed by a truck tractor, truck or the chassis thereof, provided that only the rear wheels of the drawn vehicles shall touch the road surface and the overall length of the combination does not exceed 75 feet. (e) Two-trailer combinations on interstate and certain other highways.--Combinations consisting of a truck tractor and two trailers may be driven only as described in section 4908 (relating to operation of certain combinations on interstate and certain other highways). (f) Tow dollies and converter gears.--A tow dolly or converter gear may be towed by a motor vehicle for the purpose of towing another vehicle, provided the combination meets all requirements of section 4905 (relating to safety requirements for towed vehicles) and separate lighting equipment is displayed on the rear of a towed motor vehicle. A converter gear may also be towed empty behind a combination consisting of a truck tractor and semitrailer. (g) Combinations permitted under section 4965(2).--Combinations permitted only to cross a highway to get from one commercial or industrial facility to another under section 4965(2) (relating to single permits for multiple highway crossings) may consist of more than two units as long as the dimensions and gross axle and wheel weight of the combination and loads do not exceed the maximums specified in this chapter. (h) Certain combinations permitted under section 4968.--Combinations consisting of a truck and one trailer or a truck tractor and one trailer which exceeds the maximum vehicle lengths authorized in section 4923 (relating to length of vehicles) and which shall not exceed 102 inches in width, or a truck tractor and no more than two trailers, each trailer of which shall not exceed 102 inches in width and 28 1/2 feet in length may be operated under a permit issued under section 4968 (relating to permit for movement during course of manufacture). (i) Portable traffic control signals or devices.--Portable traffic control signals mounted upon a trailer not exceeding 3,000 pounds gross vehicle weight may be operated in tandem as long as the length of the two trailers combined does not exceed 300 inches and the trailers are designed by the manufacturer to be able to be towed in tandem on public roadways. (July 1, 1981, P.L.197, No.60, eff. imd.; July 7, 1983, P.L.32, No.19, eff. imd.; July 11, 1985, P.L.204, No.52, eff. 90 days; Nov. 29, 1985, P.L.316, No.81, eff. 60 days; July 9, 1986, P.L.544, No.96, eff. 60 days; Feb. 10, 1994, P.L.10, No.2, eff. imd.; Apr. 17, 1997, P.L.6, No.3, eff. 60 days; Oct. 24, 2012, P.L.1307, No.163, eff. 60 days) Amendment . Act 163 added subsec. (i). 1997 Amendment. Act 3 amended subsec. (e). 1994 Amendment. Act 2 amended subsec. (d). 1986 Amendment. Act 96 amended subsec. (h). 1985 Amendment. Act 52 added subsec. (g). 1983 Amendment. Act 19 added subsecs. (e) and (f). See section 7 of Act 19 in the appendix to this title for special provisions relating to expiration of amendments authorizing two trailers and long combinations. 1981 Amendment. Act 60 amended subsec. (c). Cross References. Section 4904 is referred to in section 4908 of this title. ## Nearby sections - [75 Pa.C.S. § 4901 Scope and application of chapter.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4901.md) - [75 Pa.C.S. § 4902 Restrictions on use of highways and bridges.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4902.md) - [75 Pa.C.S. § 4903 Securing loads in vehicles.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4903.md) - [75 Pa.C.S. § 4904 Limits on number of towed vehicles.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4904.md) - [75 Pa.C.S. § 4905 Safety requirements for towed vehicles.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4905.md) - [75 Pa.C.S. § 4906 Fire apparatus and emergency vehicles.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4906.md) - [75 Pa.C.S. § 4907 Penalty for violation of chapter.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4907.md) - [75 Pa.C.S. § 4908 Operation of certain combinations on interstate and certain other highways.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4908.md) - [75 Pa.C.S. § 4908.1 Operation of motor homes on interstate and certain other highways (Repealed).](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4908.1.md) - [75 Pa.C.S. § 4909 Transporting foodstuffs in vehicles used to transport waste.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4909.md) - [75 Pa.C.S. § 4921 Width of vehicles.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4921.md) - [75 Pa.C.S. § 4922 Height of vehicles.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4922.md) - [75 Pa.C.S. § 4923 Length of vehicles.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4923.md) - [75 Pa.C.S. § 4924 Limitations on length of projecting loads.](https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4924.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_PA_T75_C49_S4904. Check the current official text before relying on it. Not legal advice.