602— General Requirements for Providing and Maintaining Traffic Control Devices in the Work Zone

600-23 Section 602 — General Requirements for Providing and

Maintaining Traffic Control Devices in the Work Zone 602.1 Description 1 Install all traffic control devices as specified for the safe maintenance of traffic during work. 602.2 Materials 602.2.1 General 1 Only those work zone traffic control devices included on the current Approved Products List for Traffic Control Devices in Work Zones are considered acceptable for use on highway construction work in South Carolina. The Approved Products List for Traffic Control Devices in Work Zones includes the implementation dates and any special conditions or restrictions for each device. The list is available on the Department website. Ensure that all hardware manufactured on or after January 1, 2020, compli es with the AASHTO Manual for Assessing Safety Hardware ( MASH ). Hardware that does not comply with MASH but that is included on the Approved Products List for Traffic Control Devices in Work Zones and manufactured before this date may be used for its normal service life. 2 Considering the function and weight of each device, FHWA has divided work zone traffic control devices into four categories for determining the level of effort needed to demonstrate crashworthiness. Ensure that all Category I, II, and III devices comply with FHWA requirements for crash worthiness. The complia nce date for Category IV devices will be determined at a later date. 3 Category I includes small and lightweight channelizing and delineating traffic control devices such as plastic cones, portable plastic drums, and tubular markers without attachments such as signs or warning lights. 4 Category II includes traffic control devices that are not expected to produce significant vehicular velocity changes to impacting vehicles. Acceptable devices in this category are not capable of penetrating a windshield or causing vehicular instability du ring a crash. Portable sign stands mounted with signs, Types I, II, and III barricades, vertical panels, intrusion alarms, and other such work zone traffic control devices that weigh 100 lb or less are included in this category. 5 Category III includes traffic control devices that are expected to cause significant vehicular velocity changes to impacting vehicles. These devices weigh more than 100 lb. Portable temporary barriers, portable terminal impact attenuators, truck -mounted attenuators, fixed sign supports, and other work zone traffic control devices that do not meet the definitions of Category I or II are included in this category.