Traffic Supervisor Exam Questions and Correct Answers

Is a shadow vehicle used in all traffic zones? A. True B. False - False The shadow vehicle is occupied whenever workers are in the work area. A. True B. False - False What class one light is the shadow vehicle equipped with? A. Flashing Yellow Light B. Oscillating Yellow Light C. Yellow Strobe Light D. All of the above - All of the above When may cones be substituted for drums? A. Daytime traffic control minimum height 18" B. Daytime traffic control minimum height 28" C. Daytime traffic control minimum height 36" D. Daytime traffic control minimum height 42" - Daytime traffic control minimum height 28" When may cones be substituted for drums? A. Daytime traffic control minimum height 18" B. Daytime traffic control minimum height 28" C. Daytime traffic control minimum height 36" D. Daytime traffic control minimum height 42" - Daytime traffic control minimum height 28" When cones are substituted for drums for nighttime closers, what is the minimum cone height requirement? A. 18" B. 28" C. 36" D. 42" - 42" When cones are substituted for drums at nighttime closer, what is the maximum cone spacing? A. 20' B. 30' C. 40' D. 50' - 40' What type of flashing warning lights are required when there is a nighttime lane closer? A. ROAD WORK AHEAD B. LANE CLOSED AHEAD C. A & B D. NONE OF THE ABOVE - ROAD WORK AHEAD & LANE CLOSED AHEAD If there is a lane closure of greater than three days, what is required? A. Work zone dotted lines, 4' in length separated by 10' gaps, shall be provided to identify the merge. B. The appropriate color work zone edge lines shall be applied along the taper and tangent sections. C. All the above D. None of the above - The appropriate color work zone edge lines shall be applied along the taper and tangent sections. Work zone pavement marking that conflict with final traffic lanes shall be temporary paint. A. True B. False - False What are the extra advance warning signs? A. Lane Close Ahead B. Watch for Stopped Traffic C. Road Work Ahead D. All the above - Lane Change Ahead & Watch for Stopped Traffic & Road Work Ahead Is the advisory speed plaque used in all traffic zones? A. True B. False - False When the approach speed limit is 40 mph or less, 36" warning signs may be used. A. True B. False - True Road Work Ahead signs shall be provided on entrance ramps or roadways entering the work limits. A. True B. False - True End Road Work signs are only required for lane closures of more than ______ day. A. 1 B. 2 C. 3 D 4 - 1 Sign spacing should be adjusted to avoid conflict with existing signs, minimum spacing to existing signs shall be 200' for speeds of 45 mph or less and a minimum of 400' for speeds 50 mph or greater. A. True B. False - True The minimum acceptable length for the merge taper shall be determined by _________ the width of the offset by the merge taper rate. A. Subtracting B. Adding C. Divide D. Multiplying - Multiplying The tangent (recovery area) section between the two merge tapers should be 2 times longer of the two merge tapers. A. True B. False - True What is a fundamental principle of temporary traffic control? A. To inconvenience motorists as much as possible so they will find another route. B. To guide and direct motorists through or around the work area as efficiently as possible. C. To make traffic move as slow as possible. D. All of the above are fundamental principles. - To guide and direct motorists through or around the work area as efficiently as possible. What needs to be done when work is suspended for any length of time? A. Take down the ROAD WORK AHEAD sign B. Cover up the END ROAD WORK sign C. Erect a WORK SUSPENDED sign D. Cover or remove the FLAGGER AHEAD sign - Cover or remove the FLAGGER AHEAD sign What are the four zones of a work area? A. Activity area, pedestrian area, termination area and equipment area. B. Advance warning area, transition area, activity area and termination area. C. Equipment area, termination area, activity area and transition area. D. Transition area, advanced warning area, pedestrian area and buffer zone. - Advance warning area, transition area, activity area and termination area. Which of the following signs might you see in the advanced warning area? A. END ROAD WORK B. YIELD C. EXIT OPEN D. LEFT LANE CLOSED AHEAD - LEFT LANE CLOSED AHEAD Which of the following is NOT a type of taper? A. Shifting taper B. Merging taper C. Aligning taper D. Downstream taper - Aligning taper The formula for taper length on expressways with a speed limit of 65mph is which of the following? A. L = (WxS2)/60 B. L = WxS C. L = W2xS D. L = (S2x60)/W - L = WxS What would the taper length be when closing a 12' lane on an expressway with a speed limit of 60 mph? A. 880' B.780' C.660' D. 720' - 720' What would the taper length be when closing a 14' lane on a road with a speed limit of 35 mph? A. 235.3' B. 285.8' C. 288.5' D. 490.0' - 285.8' What would be the taper length when working on a road with 12' lanes and a speed limit of 55 mph and you were using flagger control of traffic? A. 660' B. 780' C. 605' D. 100' - 100' Regarding temporary traffic control, what is a diversion? A. Something to do while waiting for an asphalt truck. B. Routing traffic onto an existing roadway. C. Routing traffic onto a temporary roadway. D. Keeping the inspector's attention off of a mistake. - Routing traffic onto a temporary roadway Which of the following is NOT an acceptable method of one-lane twoway traffic control? A. Flag transfer method B. Motorist option method C. Direct flagger communication method D. Pilot car method - Motorist option method Which of the following is one of the things that should be considered to improve worker safety? A. Reducing the speed through work zones. B. Making sure that all workers carry two-way radios. C Providing workers with extra coffee in the morning. D. Using cones instead of concrete barriers whenever possible. - Reducing the speed through work zones Flagger should have training in which of the following? A. Safe traffic control procedures and social studies. B. Safe traffic control procedures and asphalt calculations. C. Communication equipment and techniques for dealing with the public. D. Techniques for dealing with the public and safe traffic control procedures. - Techniques for dealing with the public and safe traffic control procedures. Post mounted signs for use in urban areas must be how high to the bottom of the sign? A. 8' B. 5' C. 7' D. 12' - 7' Post mounted signs used in a rural area must be how far from the edge of the road? A. 5' to 6' B. 5' to 12' C. 2' to 7' D. 6' to 12' - 6' to 12' Which description would best fit regularity signs? A. They are used to warn motorist of hazard. B. They are always diamond shaped. C. They are used to inform motorists of traffic laws. D. They may be red and white or orange and black. - They are used to inform motorists of traffic laws. Who may approve the use of regulatory signs? A. The project superintendent. B. The public agency with jurisdiction over the project. C. The local law enforcement officials. D. They require no special approval. - The public agency with jurisdiction over the project. What are the two approved sizes for diamond shaped warning signs? A. 36" and 54" B. 28" and 48" C. 24" and 36" D. 36" and 48" - 36" and 48" Which description would best fit guide signs? A. They provide motorists with information to help them through a work zone. B. They warn motorists of hazard. C. They provide information on places of interest. D. They provide motorists information on the local traffic laws. - They provide motorists with information to help them through a work zone. Which of the following best describes the main function of flashing arrow panels? A. They pint motorists to the exit ramp. B. They direct motorists to merge out of a closed lane. C. They direct motorists around a detour route. D. They warn motorist of a hazard. - They direct motorists to merge out of a closed lane. How must all channelizing devices with the exception of barricades and concrete barriers be constructed? A. So that they do not require any external ballast. B. To be as sturdy as possible to deflect errant vehicles. C. So that they perform in a predictable manner when struck by a vehicle. D. So they will bounce back into position even if hit with a truck. - So that they perform in a predictable manner when struck by a vehicle. Which size of cone is restricted to use on low speed, low volume roads? A. 36" cones B. 48" cones C. 28" cones D.18" cones - 18" cones For what reason might you opt to use vertical panels in place of cones or drums? A. They are more visible to motorists. B. They provide a more substantial barrier when separating two opposing lanes of traffic. C. They are more suitable when space is restricted. D. They should never be used in place of cones or drums. - They are more suitable when space is restricted. When should concrete barriers be used to create a merging taper on an expressway? A. When there is a high volume of truck traffic. B. When the project will take over two months to complete. C. When workers are working very close to the road. D. Concrete barriers should never be used to create a merging taper on an expressway. - Concrete barriers should never be used to create a merging taper on an expressway. Which type of project will require temporary pavement markings? A. Mobile operations B. Short term stationary operations C. Long term stationary operations D. Short duration operations - Long term stationary operations Which type of work occupies the same location for less than One hour? A. Mobile work B. Intermediate term stationary C. Short term stationary D. Short duration - Short duration What would the sign spacing be for a work zone on a rural two-lane two-way road with a speed limit of 55mph? A. 2640', 1500', 1000' B. 500', 500', 500' C. 350', 350', 350' D. Far enough apart to be seen by motorists - 500', 500', 500' What is the maximum spacing for channelizing devices used in a taper use on a multi-lane roadway? A. 50' B. There is no set spacing. C. 20' D. The same number of feet as the posted speed limit. - The same number of feet as the posted speed limit. When closing two lanes of a multi-lane expressway, what is the length of the recovery zone between the two tapers? A. 1000' B. Equal to the length of one of the tapers. C. Equal to two times the length of one of the tapers. D. One mile - Equal to two times the length of one of the tapers. When crossing traffic over the median to close one side of and expressway, the traffic will need to be controlled on which side first? A. The closed side. B. The open side. C. Both controlled at the same time. D. It doesn't matter which side is controlled first. - The open side When a downstream taper is used, what are the proper length and device spacing? A. L and 20' B. 1/2 L and 50' C. 100' and 20' D. 100' and 50' - 100' and 20' The taper length for a shifting taper is L for 50 MPH and over, what should it be for speeds less than 50 MPH? A. 1/3 L B. 100' C. 2 X L D. 1/2 L - 1/2 L A flashing arrow panel used on high speed, high volume roadways must be what size? A. 60" x 30" B. 96" x 48" C. 48" x 24" D. 118" x 60" - 96" x 48" What would the merging taper length be for a flagger taper be if the speed limit was 55 mph on a 12' wide lane? A. 700' B. 100' C. 660' D. 500' - 100' What would a merging tape be of a 65-mph road if it was 12' wide lane using the manual of uniform traffic control devices? A. 780' B. 660' C. 840' D. 900' - 780' What would a shifting taper length be if 60 mph on a 12' wide lane? A. 600' B. 720' C. 800' D. 500' - 720' What formula would you use to figure the length of a merging taper on a 35 mph street? A. L =WxS B. L = W square x S C. L = W square x S / 60 D. L = S square x W /60 - L = S square x W /60 Lane lines on expressway/freeway is? A. 20:40 B. 10:30 C. 30:20 D. 10:50 - 10:30 What is the minimal length of a piece of barrier wall? A. 12' B. 5' C. 7' D. 10' - 10' What is the length of a merging taper be if the speed limit was 35 mph and the lane was 10' wide? A. 210' B. 205' C. 300' D. 500' - 205' According to the OMUTCD, what is traffic control device spacing on a 65 mph road in a merging taper? A. Same as speed limit B. Double speed limit C. 40' apart D. 70' apart - Same as speed limit When using delineation panels, what is the maximum pacing of the panels? A. 5' B. 10' C. 15' D. 20' - 10' What is the maximum spacing of barrier reflectors on the barrier wall? A. 10' B. 24' C. 40' D. 50' - 50' Object marker spacing on the barrier wall shall not exceed what distance? A. 24' B. 50' C. 30' D. 45' - 50' When using reflectors, how high on the barrier wall must then be placed? A. 36" B. 20" C. 26" D. 24" - 26" When using glare screens what type sheeting and maximum spacing are used? A. 50'/type R, Q, Z sheeting B. 40'/type G, R, Z sheeting C. 50'/ type G, H, J sheeting D. 25'/ type H, R, K sheeting - 50'/ type G, H, J sheeting In transition area, what is the maximum spacing for RPM's on a lane shift or a crossover on a road that the speed is over 45 mph? A. 50' B. 25' C. 20' D. 10' - 20' When is snow plowing season according to ODOT? A. January-April B. November-July C. October-March D. September-March - October-March When placing RPMs along edge lines what is the maximum spacing from outside of the edge lines? A. 6" B. 4" C. 3" D. 2" - 4" Rpm offset along channelizing lines shall be no more than ____ to the left? A. 4" B. 3" C. 2" D. 1" - 1" The alteration between object markers and barriers reflectors is to be what spacing? A. 50' B. 40' C. 30' D. 25' - 25' Glare screen shall be designed using a _____ degree cut off angle of the paddle based on the tangent? A. 45 degree B. 30 degree C. 20 degree D. 10 degree - 20 degree What is the portable barrier wall minimum flare rate for 65 mph zone? A. 12:1 B. 65:1 C. 19:1 D. 8:1 - 19:1 What type of nut goes on hook and loop barrier wall pin? A. Lock Nut B. Hexagonal Nut C. Round Nut D. None of the above. - Hexagonal Nut The recovery area at barrier wall must have a _____ or flatter area and be free of workers or hazards? A. 5:1 B. 3:1 C. 2:1 D. 7:1 - 3:1 When using Uneven Lane or Low Shoulder signs, they must be placed ____ feet in advanced of condition on all intersection's entrances? A. 500' B. 750' C. 1000' D. 100' - 750' What size cone are used for Night Time Zones on the expressway at night? A. 52" B. 48" C. 42" D. 28" - 42" What is the size of the opening for an expressway for construction axes point total opening length _____ at minimum? A. 750' B. 900' C. 600' D. 100' - 750' What is the maximum spacing allowed for advanced warning sign if you are unable to follow the standard spacing? A. 2x B. 3x C. No Change Allowed D. 1.5x - 1.5x Are you allowed to use cones for tapers at NIGHT? A. True B. False - False All cones and drums should have a minimum offset from the edge of the traveled lanes of ___ ? A. 3' B. 4' C. 2 1/2' D. 1 1/2' - 1 1/2' On a divided expressway what is the maximum spacing of drums at 55 mph in the tangent? A. 100' B. 90' C. 50' D. 80' - 80' On a divided expressway, what is the maximum spacing of drums the tangent for a 70-mph road? A. 100 B. 70 C. 120 D. 80 - 120 What is the minimum lane width on an expressway using PCB that must be maintained? A. 12' B. 11' C.10' D.9' - 10' What is the minimum shoulder taper rate for 60 mph road? A. 20:1 B. 17:1 C. 15:1 D. 60:1 - 20:1 What is the minimum buffer length for a 70-mph road? A. 500' B. 425' C. 730' D. 155' - 730' How far away does a temporary traffic light need to be from a stop bar on bidirectional road? A. 60' B. 75' C. 100' D. 120' - 75' Photo strobe lights LED warning light must be seen at least _____ away? A. 100' B. 200' C. 1000' D. 1 mile - 100' Any truck and trailer combination of 10,000 pounds or more must have conspicuity tape. A. True B. False - True What is the minimum percentage length of horizontal strip retro reflective sheeting placed on side length? A. 30% B. 40% C. 100% D. 50% - 50% How far behind raised curbs must equipment be parked? A. 10 feet B. 30 feet C. 6 feet D. 20 feet - 6 feet When equipment is stored at night along roadway. It must be delineated by drums spaced 5 feet apart. With Type A warning lights on them. A. True B. False. - True Road Closed signs on barricades must have what Type of warning light on them in intersections? A. Type A B. Type B C. Type C D. Type D - Type B Grooved Pavement signs must be erected how far in advanced of grooved pavement in an intersection? A. 100 feet B. 200 feet C. 1000 feet D. 250 feet - 250 feet When covering conflicting signs. The contractor must cover with an opaque cover that covers____. A. 50% of the sign B. 85% of the sign. C. the entire message. D. 75% of the sign - the entire message. Repair & replace unsatisfactory line markings. At no additional cost to the state if the lines are at or under ___________ calendar days. A. 200 B. 365 C. 180 D. 120 - 120 How wide must an edge line and lane line be at minimum? A. 6" B. 4" C. 8" D. 5" - 4" Arrow boards and portable changeable message signs must be delineated with reflective (conspicuity) tape. A. True B. False - True "Shoulder Drop Off " signs are put up. When the drop off next to the traveled road is ______ inches. A. 1 B. 2 C. 3 D. 4 - 3 According to Ohio MUTCD what is the minimum height of the pole that holds the Stop/ Slow sign. A. 4 feet B. 7 feet C. 6.5 feet D. 5 feet - 6.5 feet