ATSSA Traffic Control Supervisor Re-certification (missing
some basics)
A conventional way of identifying distances on the plan and on the ground. Located every hundred feet. - ANS -Stationing
0+00'
\Activity Area Sub-components (3) - ANS -Buffer Space
Work Space
Traffic Space
\All workers, including emergency responders, within the right-of-way who are exposed either to
traffic (vehicles using the highway for purposes of travel) or to work vehicles and construction equipment
within the TTC zone shall wear high-visibility safety apparel that meets the Performance Class ___ or ___. - ANS -2 or 3
\Arrow board visibility distance by design:
night time dimming:
location: - ANS -1 Mile
50%
shoulder at beginning of taper if possible, if not, as close to beginning as possible inside taper.
\Barrier selection guidelines based on - ANS -speed, traffic volume / composition, road classification, deflection space,
roadway alignment, sight distance, other factors.
\Below 60 MPH Barrier Flare Rates Decrease by - ANS -Decrease by 2:1 per 5 MPH
stopping at 30 MPH with 8:1
\Clear Zone is measured from,
and is how far - ANS -The edge of the *TRAVELED* lane
Typically 30' for High-speed facilities
\device spacing taper:
tangent: - ANS -taper: not to exceed distance in feet = to posted speed limit
tangent: distance = double posted speed limit
, \Distance of L for 25 MPH with 12' Lane width - ANS -125'
\Distance of L for 35 MPH with 12' Lane width - ANS -245'
\Distance of L for 45 MPH with 12' Lane width - ANS -540'
\Distance of L for 55 MPH with 12' Lane width - ANS -660'
\Distance of L for 65 MPH 12' Lane width - ANS -780'
\Distance of L with 12' Lane Width for:\
25, 35, 45, 55, 65 MPH - ANS -125' 245' 540' 660' 780'
\Downstream taper Length - ANS -50'-100' per lane
\Extend Barrier Rail Flare until - ANS -The exposed end is outside the clear zone
\Formula for Min. taper length - ANS -L=(WS²)/60 for 40MPH or less,
L=WS for 45MPH or more
\how far should a PCMS be visible?
Portable changeable message sign - ANS -1/2 mile visibility day and night
\If significant threat of vehicle incursions into temporary pedestrian pathways _________ should be installed. - ANS
-temporary traffic barriers
\If Temporary Traffic Barriers are used as channelizing devices they should be: - ANS -Light in color and supplemented
with standard delineation or pavement markings
\Impact Barrels should overlap the fixed object on the traffic side by: - ANS -Minimum of 30"
\less expensive for long-term projects, easy to maintain, reusable, low deflection. Heavy equipment needed for
installation. - ANS -portable concrete barriers
\limit distractions and discourage rubbernecking
reduce headlight glare from oncoming traffic
reduce floodlight glare from night work
should not be mounted where they reduce motirist visibility and sight distance - ANS -uses of screens (mounted on top of
rail)
\Longitudinal Buffer Space - ANS -Recovery Area for errant vehicles: Forgiving design
Protects workers and Motorists
Always completely empty or clear
No vehicles, truck-mounted attenuator, equipment, or materials
some basics)
A conventional way of identifying distances on the plan and on the ground. Located every hundred feet. - ANS -Stationing
0+00'
\Activity Area Sub-components (3) - ANS -Buffer Space
Work Space
Traffic Space
\All workers, including emergency responders, within the right-of-way who are exposed either to
traffic (vehicles using the highway for purposes of travel) or to work vehicles and construction equipment
within the TTC zone shall wear high-visibility safety apparel that meets the Performance Class ___ or ___. - ANS -2 or 3
\Arrow board visibility distance by design:
night time dimming:
location: - ANS -1 Mile
50%
shoulder at beginning of taper if possible, if not, as close to beginning as possible inside taper.
\Barrier selection guidelines based on - ANS -speed, traffic volume / composition, road classification, deflection space,
roadway alignment, sight distance, other factors.
\Below 60 MPH Barrier Flare Rates Decrease by - ANS -Decrease by 2:1 per 5 MPH
stopping at 30 MPH with 8:1
\Clear Zone is measured from,
and is how far - ANS -The edge of the *TRAVELED* lane
Typically 30' for High-speed facilities
\device spacing taper:
tangent: - ANS -taper: not to exceed distance in feet = to posted speed limit
tangent: distance = double posted speed limit
, \Distance of L for 25 MPH with 12' Lane width - ANS -125'
\Distance of L for 35 MPH with 12' Lane width - ANS -245'
\Distance of L for 45 MPH with 12' Lane width - ANS -540'
\Distance of L for 55 MPH with 12' Lane width - ANS -660'
\Distance of L for 65 MPH 12' Lane width - ANS -780'
\Distance of L with 12' Lane Width for:\
25, 35, 45, 55, 65 MPH - ANS -125' 245' 540' 660' 780'
\Downstream taper Length - ANS -50'-100' per lane
\Extend Barrier Rail Flare until - ANS -The exposed end is outside the clear zone
\Formula for Min. taper length - ANS -L=(WS²)/60 for 40MPH or less,
L=WS for 45MPH or more
\how far should a PCMS be visible?
Portable changeable message sign - ANS -1/2 mile visibility day and night
\If significant threat of vehicle incursions into temporary pedestrian pathways _________ should be installed. - ANS
-temporary traffic barriers
\If Temporary Traffic Barriers are used as channelizing devices they should be: - ANS -Light in color and supplemented
with standard delineation or pavement markings
\Impact Barrels should overlap the fixed object on the traffic side by: - ANS -Minimum of 30"
\less expensive for long-term projects, easy to maintain, reusable, low deflection. Heavy equipment needed for
installation. - ANS -portable concrete barriers
\limit distractions and discourage rubbernecking
reduce headlight glare from oncoming traffic
reduce floodlight glare from night work
should not be mounted where they reduce motirist visibility and sight distance - ANS -uses of screens (mounted on top of
rail)
\Longitudinal Buffer Space - ANS -Recovery Area for errant vehicles: Forgiving design
Protects workers and Motorists
Always completely empty or clear
No vehicles, truck-mounted attenuator, equipment, or materials
