Traffic Control

Question 1

When less than five parking spaces are provided, one shall be how many feet wide?

Answer 1

14 feet

Question 2

When the sign is in path of travel it should be posted at a height of ___ inches minimum.

Answer 2

80 inches or 6’-8”

Question 3

Beveled lip, the lower end of each curb ramp shall have a ___inch lip beveled at 45 degrees for visual impairments.

Answer 3

1/2 inch

Question 4

In accordnace with ADA guide lines of a parking lot designed to park 26 to 50 vehicles the required number of accessible ADA spaces would be?

Answer 4

2

Question 5

The slope of a curb ramp should not exceed?

Answer 5

1 -12 units

Question 6

Length of a paking space shall be at least how many feet long?

Answer 6

18 feet

Question 7

The international accessibility symbol shall be ___ sq. inches minimum.

Answer 7

70 square inches

Question 8

Parking spaces and access aisles shall not exceed a slope of?

Answer 8

2%

Question 9

Signs displaying “unauthorized parking” shall be 17 inches by 22 inches minimum with letter___ inches minimum in height.

Answer 9

1 inch

Question 10

A TTC plan should be designed so that vehicles can travel through the zone with a speed limit reduction of no more than…

Answer 10

10 mph

Question 11

Four areas of a TCC zone?

Answer 11

1. The advance warning area
2. The transition area
3. The activity area
4. Termination area

Question 12

Typical distances for placement of warning signs in advance warning area?

Answer 12

Freeways - 1/2 mile

Urban streets - 4 to 8 Times the speed limit in mph

Question 13

Temporary Sign Placement - location and height?

Answer 13

Located on the right-hand side of the roadway.

• Minimum height from bottom of the sign to the elevation of pavement/sidewalk
  - 5 feet rural areas
  - 7 feet everywhere else

Question 14

Recommended advance warning sign minimum spacing for:

1. Urban low speed
2. Urban high speed
3. Rural
4. Freeway

Answer 14

1. 100 feet
2. 350 feet
3. 500 feet
4. 1,000 feet

Question 15

Buffer space

Answer 15

Is an area that separates road user flow from the work space and might provide some recovery space for an errant vehicle.

Question 16

Stopping sight distance as a function of speed?

20 mph =
35 mph =
55 mph=
75 mph =

Answer 16

20mph = 115 feet
35mph = 155 feet
55 mph = 495 feet
75 mph = 820 feet

Question 17

Formula for determining taper length?

• 40 mph or less
• 45 mph or more

Answer 17

40 mph or less:
L = WS^2/ 60

45 mph or more:
L=WS

Where,
W = width of offset in feet
S = posted speed limit

Question 18

The maximum distance in feet between devices in a taper should not exceed _______ the speed limit in mph

Answer 18

1 times

Question 19

One-lane, two-way traffic taper and a down stream taper should have a taper length range of what in feet?

Answer 19

50 feet minimum, 100 feet maximum

Question 20

When it is not possible to maintain a 60” width for a pedestrian pathway, a ___” x ____” passing space should be provided every _____ feet

Answer 20

60” x 60”, 200 feet

Question 21

Signs and other devices mounted lower than 7 feet above the temporary pedestrian pathway should not project more than ____” into accessible pedestrian facilities

Answer 21

4”

Question 22

Lateral locations of signs from shoulder/road/sidewalk?

1. Rural
2. Rural with advisory speed plaque
3. Business commercial or residential
4. Business commercial/residential - no curb

Answer 22

1. 6 to 12 feet
2. 6 ft min. From shoulder
3. 2 feet
4. 6 to 12 feet

Question 23

If portable mounting signs do not meet minimum height requirements, they cannot be used longer than?

Answer 23

3 days

Question 24

The bottoms of a sign mounted on a barricade or other portable support shall be at least _____ above traveled way.

Answer 24

1 foot

Question 25

Channelizing devices for pedestrian shall be continuous and have the following dimensions above the ground.

Answer 25

Bottom of the bottom surface - no higher than 2” above ground Top of the top surface - no lower than 32” - 36” above ground

Question 26

Barricades used on high speed roadways shall have a minimum square inches of retroreflective area facing road users.

Answer 26

270 square inches

Question 27

Overhead sign placement in feet?

Answer 27

17 feet from bottom of sign to top of ground. Post shall be 6’ minimum away from shoulder edge