Promulgation of regulations by department. The department shall promulgate regulations governing the number, size, color, type,

SUBCHAPTER B SAFETY AND ANTI-POLLUTION EQUIPMENT Sec. 4521.  Promulgation of regulations by department. 4522.  Effect of amendments to Federal regulations (Repealed). 4523.  Exhaust systems, mufflers and noise control. 4524.  Windshield obstructions and wipers. 4525.  Tire equipment and traction surfaces. 4526.  Safety glass. 4527.  Image display device. 4528.  Fire extinguishers. 4529.  Slow moving vehicle emblem. 4530.  Portable emergency warning devices. 4531.  Emission control systems. 4532.  Smoke control for diesel-powered motor vehicles. 4533.  Rear wheel shields. 4534.  Rearview mirrors. 4535.  Audible warning devices. 4536.  Bumpers. 4537.  Device used to carry pedalcycles. § 4521.  Promulgation of regulations by department. The department shall promulgate regulations governing the number, size, color, type, construction, location and use of other equipment on vehicles consistent with but not limited by the provisions of this subchapter and taking into consideration different requirements for different classes or types of vehicles.