The Slippery When Wet sign may be used to warn that a slippery condition might exist.

Slippery When Wet, Black and White

The Slippery When Wet sign may be used to warn that a slippery condition might exist.

The Rough Road sign may be used to warn that rough conditions might exist.

Rough Road, Black and White

The Rough Road sign may be used to warn that rough conditions might exist.

The NO PASSING ZONE sign shall be a pennant-shaped isosceles triangle with its longer axis horizontal and pointing to the right. When used, the NO PASSING ZONE sign shall be installed on the left side of the roadway at the beginning of no-passing zones identified by either pavement markings or DO NOT PASS signs or both.

No Passing Zone, Black and White

The NO PASSING ZONE sign shall be a pennant-shaped isosceles triangle with its longer axis horizontal…

A Merge sign may be used to warn road users on the major roadway that merging movements might be encountered in advance of a point where lanes from two separate roadways converge as a single traffic lane and no turning conflict occurs. A Merge sign may also be installed on the side of the entering roadway to warn road users on the entering roadway of the merge condition. The Merge sign should be installed on the side of the major roadway where merging traffic will be encountered and in such a position as to not obstruct the road user's view of entering traffic.

Merge, Black and White

A Merge sign may be used to warn road users on the major roadway that merging movements might be encountered…

The Lane Ends symbol sign, should be used to warn of the reduction in the number of traffic lanes in the direction of travel on a multi-lane highway.

Lane Ends, Black and White

The Lane Ends symbol sign, should be used to warn of the reduction in the number of traffic lanes in…

The Added Lane sign should be installed in advance of a point where two roadways converge and merging movements are not required. When possible, the Added Lane sign should be placed such that it is visible from both roadways; if this is not possible, an Added Lane sign should be placed on the side of each roadway.

Added Lane, Black and White

The Added Lane sign should be installed in advance of a point where two roadways converge and merging…

When a Merge sign is to be installed on an entering roadway that curves before merging with the major roadway, such as a ramp with a curving horizontal alignment as it approaches the major roadway, the Entering Roadway Merge sign should be used to better portray the actual geometric conditions to road users on the entering roadway.

Entering Roadway Merge, Black and White

When a Merge sign is to be installed on an entering roadway that curves before merging with the major…

When an Added Lane sign is to be installed on a roadway that curves before converging with another roadway that has a tangent alignment at the point of convergence, the Entering Roadway Added Lane sign should be used to better portray the actual geometric conditions to road users on the curving roadway.

Entering Roadway Added Lane, Black and White

When an Added Lane sign is to be installed on a roadway that curves before converging with another roadway…

A Two-Way Traffic sign should be used to warn road users of a transition from a multi-lane divided section of roadway to a two-lane, two-way section of roadway.

Two-Way Traffic, Black and White

A Two-Way Traffic sign should be used to warn road users of a transition from a multi-lane divided section…

The Two-Direction Large Arrow sign shall be a horizontal rectangle. If used, it shall be installed on the far side of a T-intersection in line with, and at approximately a right angle to, approaching traffic. The Two-Direction Large Arrow sign shall not be used where there is no change in the direction of travel such as at the beginnings and ends of medians or at center piers.

Two-Direction Large Arrow, Black and White

The Two-Direction Large Arrow sign shall be a horizontal rectangle. If used, it shall be installed on…

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Cross Road, Black and White

A Cross Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A Side Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Side Road, Black and White

A Side Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A Side Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Side Road, Black and White

A Side Road symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A T-Symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

T-Symbol, Black and White

A T-Symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A Y-Symbol sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The relative importance of the intersecting roadways may be shown by different widths of lines in the symbol. An advance street name plaque may be installed above or below an Intersection Warning sign.

Y-Symbol, Black and White

A Y-Symbol sign may be used in advance of an intersection to indicate the presence of an intersection…

A sign may be used in advance of an intersection to indicate the presence of an intersection and the possibility of turning or entering traffic. The Circular Intersection symbol sign accompanied by an educational TRAFFIC CIRCLE plaque may be installed in advance of a circular intersection.

Circular Intersection, Black and White

A sign may be used in advance of an intersection to indicate the presence of an intersection and the…

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the roadway by trucks, bicyclists, farm vehicles, emergency vehicles, golf carts, horse-drawn vehicles, or other vehicles might occur. The TRUCK CROSSING word message sign may be used as an alternate to the Truck Crossing symbol sign.

Truck Crossing, Black and White

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the…

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the roadway by trucks, bicyclists, farm vehicles, emergency vehicles, golf carts, horse-drawn vehicles, or other vehicles might occur. These locations might be relatively confined or might occur randomly over a segment of roadway. Vehicular Traffic signs should be used only at locations where the road user's sight distance is restricted, or the condition, activity, or entering traffic would be unexpected. If the condition or activity is seasonal or temporary, the Vehicular Traffic sign should be removed or covered when the condition or activity does not exist.

Golf Cart Crossing, Black and White

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the…

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the roadway by trucks, bicyclists, farm vehicles, emergency vehicles, golf carts, horse-drawn vehicles, or other vehicles might occur. These locations might be relatively confined or might occur randomly over a segment of roadway. Vehicular Traffic signs should be used only at locations where the road user's sight distance is restricted, or the condition, activity, or entering traffic would be unexpected. If the condition or activity is seasonal or temporary, the Vehicular Traffic sign should be removed or covered when the condition or activity does not exist.

Horse-Drawn Vehicles, Black and White

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Bicycle Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Pedestrian, Bicycle, and School signs and their related supplemental plaques may have a fluorescent yellowgreen background with a black legend and border.

Pedestrian Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Deer Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Cattle Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the roadway by trucks, bicyclists, farm vehicles, emergency vehicles, golf carts, horse-drawn vehicles, or other vehicles might occur. These locations might be relatively confined or might occur randomly over a segment of roadway. Vehicular Traffic signs should be used only at locations where the road user's sight distance is restricted, or the condition, activity, or entering traffic would be unexpected. If the condition or activity is seasonal or temporary, the Vehicular Traffic sign should be removed or covered when the condition or activity does not exist.

Farm Equipment, Black and White

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the…

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the roadway by trucks, bicyclists, farm vehicles, emergency vehicles, golf carts, horse-drawn vehicles, or other vehicles might occur. These locations might be relatively confined or might occur randomly over a segment of roadway. Vehicular Traffic signs should be used only at locations where the road user's sight distance is restricted, or the condition, activity, or entering traffic would be unexpected. If the condition or activity is seasonal or temporary, the Vehicular Traffic sign should be removed or covered when the condition or activity does not exist.

Farm Equipment, Black and White

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Snowmobile Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Equestrian Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the roadway by trucks, bicyclists, farm vehicles, emergency vehicles, golf carts, horse-drawn vehicles, or other vehicles might occur. These locations might be relatively confined or might occur randomly over a segment of roadway. Vehicular Traffic signs should be used only at locations where the road user's sight distance is restricted, or the condition, activity, or entering traffic would be unexpected. If the condition or activity is seasonal or temporary, the Vehicular Traffic sign should be removed or covered when the condition or activity does not exist. The Emergency Vehicle sign with the EMERGENCY SIGNAL AHEAD supplemental plaque shall be placed in advance of all emergency-vehicle traffic control signals.

Fire Station, Black and White

Vehicular Traffic signs may be used to alert road users to locations where unexpected entries into the…

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries into the roadway or shared use of the roadway by pedestrians, animals, and other crossing activities might occur. Nonvehicular signs should be used only at locations where the crossing activity is unexpected or at locations not readily apparent.

Handicap Crossing, Black and White

Nonvehicular signs may be used to alert road users in advance of locations where unexpected entries…

The Playground sign may be used to give advance warning of a designated children's playground that is located adjacent to the road. The Playground sign may have a fluorescent yellowgreen background with a black legend and border.

Playground, Black and White

The Playground sign may be used to give advance warning of a designated children's playground that is…

If the condition indicated by a warning sign is located on an intersecting road and the distance between the intersection and condition is not sufficient to provide adequate advance placement of the warning sign, a Supplemental Arrow plaque should be used below the warningsign.

Supplemental Arrow, Black and White

If the condition indicated by a warning sign is located on an intersecting road and the distance between…

If the condition indicated by a warning sign is located on an intersecting road and the distance between the intersection and condition is not sufficient to provide adequate advance placement of the warning sign, a Supplemental Arrow plaque should be used below the warningsign.

Supplemental Arrow, Black and White

If the condition indicated by a warning sign is located on an intersecting road and the distance between…

If the condition indicated by a warning sign is located on an intersecting road and the distance between the intersection and condition is not sufficient to provide adequate advance placement of the warning sign, a Supplemental Arrow plaque should be used below the warningsign.

Supplemental Arrow, Black and White

If the condition indicated by a warning sign is located on an intersecting road and the distance between…

The horizontal alignment Turn may be used in advance of situations where the horizontal roadway alignment changes. This specific sign indicates that there is a 90° right turn on the road ahead.

Right Turn, Black and White

The horizontal alignment Turn may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment Curve may be used in advance of situations where the horizontal roadway alignment changes.

Right Curve, Black and White

The horizontal alignment Curve may be used in advance of situations where the horizontal roadway alignment…

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that there is a right turn ahead, immediately followed by a left turn.

Reverse Turn, Black and White

The horizontal alignment Reverse Turn signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that the road ahead curves to the right and then immediately curves back to the left.

Reverse Curve, Black and White

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that two lanes in the road ahead curve to the right and then immediately curve back to the left.

Double Reverse Curve, Black and White

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal…

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal roadway alignment changes. This sign indicates that three lanes in the road ahead curve to the right and then immediately curve back to the left.

Triple Reverse Curve, Black and White

The horizontal alignment Reverse Curve signs may be used in advance of situations where the horizontal…

<p>A Highway-Rail Grade Crossing Advance Warning sign shall be used on each highway in advance of every highway-rail grade crossing except in the following circumstances:<BR>A. On an approach to a highway-rail grade crossing from a T-intersection with a parallel highway, if the distance from the edge of the track to the edge of the parallel roadway is less than 30 m (100 ft), and signs are used on both approaches of the parallel highway; or<BR>B. On low-volume, low-speed highways crossing minor spurs or other tracks that are infrequently used and are flagged by train crews; or<BR>C. In business districts where active highway-rail grade crossing traffic control devices are in use; or<BR>D. Where physical conditions do not permit even a partially effective display of the sign.<BR></p>

Highway-Rail Grade Crossing Advance Warning, Black and White

A Highway-Rail Grade Crossing Advance Warning sign shall be used on each highway in advance of every…

The Flagger symbol sign should be used in advance of any point where a flagger is stationed to control road users.

Flagger, Black and White

The Flagger symbol sign should be used in advance of any point where a flagger is stationed to control…

A Workers symbol sign may be used to alert road users of workers in or near the roadway.

Workers, Black and White

A Workers symbol sign may be used to alert road users of workers in or near the roadway.

The Double Reverse Curve sign may be used when the tangent distance between two reverse curves is less than 180 m (600 ft), thus making it difficult for a second Reverse Curve sign to be placed between the curves.

Single Reverse Curve, Black and White

The Double Reverse Curve sign may be used when the tangent distance between two reverse curves is less…

The Double Reverse Curve sign may be used when the tangent distance between two reverse curves is less than 180 m (600 ft), thus making it difficult for a second Reverse Curve sign to be placed between the curves.

Double Reverse Curve, Black and White

The Double Reverse Curve sign may be used when the tangent distance between two reverse curves is less…

The Double Reverse Curve sign may be used when the tangent distance between two reverse curves is less than 180 m (600 ft), thus making it difficult for a second Reverse Curve sign to be placed between the curves.

Triple Reverse Curve, Black and White

The Double Reverse Curve sign may be used when the tangent distance between two reverse curves is less…

Each detour shall be adequately marked with standard temporary route signs and destination signs. Detour signs in TTC incident management situations may have a black legend and border on a fluorescent pink background. The Detour Arrow sign may be used where a detour route has been established. The Detour Arrow sign should normally be mounted just below the ROAD CLOSED sign. The Detour Arrow sign should include a horizontal arrow pointed to the right or left as required.

Detour Arrow, Black and White

Each detour shall be adequately marked with standard temporary route signs and destination signs. Detour…

Each detour shall be adequately marked with standard temporary route signs and destination signs. Detour signs in TTC incident management situations may have a black legend and border on a fluorescent pink background. The DETOUR sign should be used for unnumbered highways, for emergency situations, for periods of short durations, or where, over relatively short distances, road users are guided along the detour and back to the desired highway without route signs. A Street Name sign should be placed above, or the street name should be incorporated into, a DETOUR sign to indicate the name of the street being detoured.

Detour, Black and White

Each detour shall be adequately marked with standard temporary route signs and destination signs. Detour…

The School Advance Warning assembly should be installed in advance of locations where school buildings or grounds are adjacent to the highway, except where a physical barrier such as fencing separates school children from the highway. The School Advance Warning assembly shall be used in advance of any installation of the School Crosswalk Warning assembly, or in advance of the first installation of the School Speed Limit assembly. If used, the School Advance Warning assembly shall be installed not less than 45 m (150 ft) nor more than 210 m (700 ft) in advance of the school grounds or school crossings. If used, the School Advance Warning assembly shall consist of a School Advance Warning sign supplemented with a plaque with the legend AHEAD or XXX METERS (XXX FEET) to provide advance notice to road users of crossing activity.

School Advance Warning, Black and White

The School Advance Warning assembly should be installed in advance of locations where school buildings…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning Cross Intersection, Black and White

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning T-Intersection, Black and White

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the edge of the parallel roadway, is less than 30 m (100 ft), this sign shall be installed on each approach of the parallel highway to warn road users making a turn that they will encounter a highway-rail grade crossing soon after making a turn, and a <a href="../../68200/68226/68226_488_W10-1_b.htm">Highway-Rail Grade Crossing Advance Warning</a> sign for the approach to the tracks shall not be required to be between the tracks and the parallel highway.

Highway-Rail Grade Crossing Advance Warning T-Intersection, Black and White

If the distance between the railroad tracks and a parallel highway, from the edge of the tracks to the…

A Storage Space sign supplemented by a word message storage distance sign should be used where there is a highway intersection in close proximity to the highway-rail grade crossing and an engineering study determines that adequate space is not available to store a design vehicle(s) between the highway intersection and the train dynamic envelope. The Storage Space signs should be mounted in advance of the highway-rail grade crossing at an appropriate location to advise drivers of the space available for vehicle storage between the highway intersection and the highway-rail grade crossing.

Storage Space, Black and White

A Storage Space sign supplemented by a word message storage distance sign should be used where there…

The Skewed Crossing sign may be used at a skewed highway-rail grade crossing to warn drivers that the railroad tracks are not perpendicular to the highway. If the Skewed Crossing sign is used, the symbol should show the direction of the crossing (near left to far right as shown in Figure 8B-5, or the mirror image if the track goes from far left to near right). If the Skewed Crossing sign is used where the angle of the crossing is significantly different than 45 degrees, the symbol should show the approximate angle of the crossing.

Skewed Crossing, Black and White

The Skewed Crossing sign may be used at a skewed highway-rail grade crossing to warn drivers that the…

If the highway profile conditions are sufficiently abrupt to create a hang-up situation for long wheelbase vehicles or for trailers with low ground clearance, the Low Ground Clearance Highway-Rail Grade Crossing sign should be installed in advance of the highway-rail grade crossing.

Low Ground Clearance Highway-Rail Grade Crossing, Black and White

If the highway profile conditions are sufficiently abrupt to create a hang-up situation for long wheelbase…

Other bicycle warning signs such as the Hill sign may be installed on bicycle facilities to warn bicyclists of conditions not readily apparent. If used, other advance bicycle warning signs should be installed no less than 15 m (50 ft) in advance of the beginning of the condition.

Bicycle Hill, Black and White

Other bicycle warning signs such as the Hill sign may be installed on bicycle facilities to warn bicyclists…

The Bicycle Surface Condition Warning sign may be installed where roadway or shared-use path conditions could cause a bicyclist to lose control of the bicycle. Signs warning of other conditions that might be of concern to bicyclists, including BUMP, DIP, PAVEMENT ENDS, and any other word message that describes conditions that are of concern to bicyclists, may also be used. A supplemental plaque may be used to clarify the specific type of surface condition.

Bicycle Surface Condition Warning, Black and White

The Bicycle Surface Condition Warning sign may be installed where roadway or shared-use path conditions…

Pecopteris, frond of an ancient tree fern, was a form genus of leaves from several unrelated plant groups that flourished the early Carboniferous period and on to c. 250 Ma. Pecopteris first appeared in the Devonian period, but flourished in the Carboniferous, especially the Pennsylvanian. Plants bearing these leaves went extinct around the beginning of the Permian period.

Pecopteris Tree Fern

Pecopteris, frond of an ancient tree fern, was a form genus of leaves from several unrelated plant groups…

The sponge, a many celled animal, begins its life as a single-cell, the egg. The continued division of its cells result in the formation of a hollow globe of cells called the blastula, similar to Volvox, and at this point the young larva leaves the parent.

Sponge Develoment

The sponge, a many celled animal, begins its life as a single-cell, the egg. The continued division…

The sponge, a many celled animal, that begins its life as a single-cell, the egg. The continued division of its cells result in the formation of a hollow globe of cells called the blastula, similar to Volvox, and at this point the young larva leaves the parent.

Sponge Develoment

The sponge, a many celled animal, that begins its life as a single-cell, the egg. The continued division…

The sponge, a many celled animal, begins its life as a single-cell, the egg. After division of cells and formation of blastula, the young larva leaves the parent. The next transformation consists of a pushing in of one side. This depression deepens and gradually results in the formation of a two layered sac know as the gastrula.

Sponge Develoment

The sponge, a many celled animal, begins its life as a single-cell, the egg. After division of cells…