Question: 4 8 . When work is planned for nighttime hours, how could temporary traffic controls be modified to adequately control traffic through the work zone?

48. When work is planned for nighttime hours, how could temporary traffic controls be modified to adequately control traffic through the work zone?
1. Use of larger, more reflective channelizing devices such as drums
2. Use of floodlighting for any flagger stations and for the work area
3. Addition of warning lights to temporary traffic control devices and signs
4. Use of retroreflective signs
5. Use of speech messages provided by audible information devices
4 8 . When work is planned for nighttime hours,

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