Does § 393.41 prohibit air brake systems from being equipped with a means to release the spring brakes for purposes of towing disabled vehicles in emergency situations?

Section § 393.41: Parking brake systems.

Question 2: Does § 393.41 prohibit air brake systems from being equipped with a means to release the spring brakes for purposes of towing disabled vehicles in emergency situations?

Guidance: No, provided the brakes are designed and...