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Download Traffic Supervisor Exam 2025/2026 Questions & With Correct Answers Already Graded A. and more Exercises Automobile Engineering in PDF only on Docsity!
Is a shadow vehicle used in all traffic zones? A. True B. False - Correct Answer False The shadow vehicle is occupied whenever workers are in the work area. A. True B. False - Correct Answer 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 - Correct Answer 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" - Correct Answer 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" - Correct Answer 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" - Correct Answer 42" When cones are substituted for drums at nighttime closer, what is the maximum cone spacing? A. 20' B. 30' Cc. 40! D. 50'- Correct Answer 40! What type of flashing warning lights are required when there is a nighttime lane closer? A. ROAD WORK AHEAD B. LANE CLOSED AHEAD CARB D. NONE OF THE ABOVE - Correct Answer 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 - Correct Answer The appropriate color work zone edge lines shall be applied along the taper and tangent sections. B.2 C3 D4- Correct Answer 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 - Correct Answer 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 - Correct Answer 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 - Correct Answer 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. - Correct Answer 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 - Correct Answer 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. - Correct Answer 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 - Correct Answer 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 - Correct Answer 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 Which of the following is NOT an acceptable method of one-lane two-way traffic control? A. Flag transfer method B. Motorist option method C. Direct flagger communication method D. Pilot car method - Correct Answer 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. - Correct Answer 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. - Correct Answer Techniques for dealing with the public and safe traffic contral procedures. Post mounted signs for use in urban areas must be how high to the bottom of the sign? A.8' B.S! Cg" D. 12'- Correct Answer 7' Post mounted signs used in a rural area must be how far from the edge of the road? A.5'to6! B.5' to 12' C.2' to 7! D. 6" to 12'- Correct Answer 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. - Correct Answer 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. - Correct Answer 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" C. 28" cones D.18" cones - Correct Answer 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. - Correct Answer 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. - Correct Answer 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 - Correct Answer 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 - Correct Answer Short duration What would the sign spacing be for a work zone ona rural two-lane two-way road with a speed limit of SSmph? A. 2640, 1500', 1000' B. 500', 500', 500' C. 350’, 350', 350° D. Far enough apart to be seen by motorists - Correct Answer 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. - Correct Answer 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 - Correct Answer 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? 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' - Correct Answer 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! - Correct Answer 780° What would a shifting taper length be if 60 mph on a 12' wide lane? A. 600' B. 720° C. 800' D. 500' - Correct Answer 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 xS C.L=W square xS/60 D. L=S square x W /60 - Correct Answer L = S square x W /60 Lane lines on expressway/freeway is? A. 20:40 B. 10:30 C. 30:20 D. 10:50 - Correct Answer 10:30 What is the minimal length of a piece of barrier wall? Ae B.S! ee a D. 10'- Correct Answer 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' - Correct Answer 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 - Correct Answer Same as speed limit 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 - Correct Answer 50'/ type G, H, J sheeting In transition area, what is the maximum spacing for RPM's on a lane shift or a crossover ona road that the speed is over 45 mph? A. 50" B. 25' Cc. 20! D. 10'- Correct Answer 20! When is snow plowing season according to ODOT? A, January-April B. November-July C. October-March D. September-March - Correct Answer October-March When placing RPMs along edge lines what is the maximum spacing from outside of the edge lines? A.6" B. 4" c.2" D. 2" - Correct Answer 4" Rpm offset along channelizing lines shall be no more than to the left? A.4" B. 3" €.2" D. 1" - Correct Answer 1" The alteration between object markers and barriers reflectors is to be what spacing? A. 50" B. 40' C..30 D. 25'- Correct Answer 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 - Correct Answer 20 degree What is the portable barrier wall minimum flare rate for 65 mph zone? A.12:1 B. 65:1 C..1981 D. 8:1 - Correct Answer 19:1 What type of nut goes on hook and loop barrier wall pin? A.750' B. 900" Cc. 600' D. 100' - Correct Answer 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 - Correct Answer 1.5x Are you allowed to use cones for tapers at NIGHT? A. True B. False - Correct Answer False All cones and drums should have a minimum offset from the edge of the traveled lanes of? A.3' B. 4" G2 T/2) D.11/2'- Correct Answer 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'- Correct Answer 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 - Correct Answer 120 What is the minimum lane width on an expressway using PCB that must be maintained? A.12' B. 11' C.10' D.9'- Correct Answer 10' What is the minimum shoulder taper rate for 60 mph road? A. 20:1 Bu a7sd C.1be1 D. 60:1 - Correct Answer 20:1 What is the minimum buffer length for a 70-mph road? A.500' B. 425' 
