The Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle of Sharpsburg, was fought on September 17, 1862, near Sharpsburg, Maryland and was the first major battle in the Civil War to take place in the North. This battle was the bloodiest single-day battle in American history, with about 23,000 casualties. The Sunken Road was worn down by years of wagon traffic, which formed a natural trench for the men.

Sunken Road at Battle of Antietam

The Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle of Sharpsburg,…

Scene at the Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle of Sharpsburg, was fought on September 17, 1862, near Sharpsburg, Maryland and was the first major battle in the Civil War to take place in the North. This battle was the bloodiest single-day battle in American history, with about 23,000 casualties. The Sunken Road was worn down by years of wagon traffic, which formed a natural trench for the men.

Sunken Road at Battle of Antietam

Scene at the Sunken Road at the Battle of Antietam. The Battle of Antietam, also known as the Battle…

An illustration of a man deciding between two paths.

Man Deciding Between Two Paths

An illustration of a man deciding between two paths.

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Black and White

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

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Color

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

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Outline

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

"The horizontal alignment Turn signs may be used in advance of situations where the horizontal roadway alignment changes. The Turn sign or the Curve sign may be combined with the Cross Road sign or the Side Road sign to create a combination Horizontal Alignment/Intersection sign that depicts the condition where an intersection occurs within a turn or curve."

Combination Horizontal Alignment/Intersection, Silhouette

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Black and White

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Color

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Outline

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve sign may be used.

U-Turn, Silhouette

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Black and White

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Color

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Outline

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop sign may be used.

270 Degree Loop, Silhouette

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

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° left turn on the road ahead.

Left Turn, Black and White

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

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° left turn on the road ahead.

Left Turn, Color

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

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° left turn on the road ahead.

Left Turn, Outline

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

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° left turn on the road ahead.

Left Turn, Silhouette

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.

Left Curve, Black and White

The horizontal alignment Curve 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.

Left Curve, Color

The horizontal alignment Curve 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.

Left Curve, Outline

The horizontal alignment Curve 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.

Left Curve, Silhouette

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

Reverse Turn, Color

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

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 left turn ahead, immediately followed by a right turn.

Reverse Turn, Outline

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

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 left turn ahead, immediately followed by a right turn.

Reverse Turn, Silhouette

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 left and then immediately curves back to the right.

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 the road ahead curves to the left and then immediately curves back to the right.

Reverse Curve, Color

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 the road ahead curves to the left and then immediately curves back to the right.

Reverse Curve, Outline

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 the road ahead curves to the left and then immediately curves back to the right.

Reverse Curve, Silhouette

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

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Black and White

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Color

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Outline

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal roadway alignment changes.

Winding Road, Silhouette

The horizontal alignment Winding Road signs may be used in advance of situations where the horizontal…

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Black and White

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Color

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Outline

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. A One-Direction Large Arrow sign may be used on the outside of the turn or curve. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

One-Direction Large Arrow, Silhouette

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Black and White

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Color

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Outline

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

The horizontal alignment signs may be used in advance of situations where the horizontal roadway alignment changes. When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow sign or Chevron Alignment signs should be installed on the outside of the turn or curve.

Chevron Alignment, Silhouette

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

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Black and White

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Color

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Outline

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal curvature, and/or other physical features require special precautions on the part of road users.

Hill, Silhouette

The Hill sign should be used in advance of a downgrade where the length, percent of grade, horizontal…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Black and White

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Color

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Outline

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side of an island, obstruction, or gore in the roadway. Traffic separated by this sign may either rejoin or change directions.

Double Arrow, Silhouette

The Double Arrow sign may be used to advise road users that traffic is permitted to pass on either side…

The DEAD END sign may be used at the entrance of a single road or street that terminates in a dead end or cul-de-sac.

Dead End, Black and White

The DEAD END sign may be used at the entrance of a single road or street that terminates in a dead end…

The DEAD END sign may be used at the entrance of a single road or street that terminates in a dead end or cul-de-sac.

Dead End, Color

The DEAD END sign may be used at the entrance of a single road or street that terminates in a dead end…

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection or junction) where the opposing flows of traffic are separated by a median or other physical barrier. The word message DIVIDED HIGHWAY or DIVIDED ROAD sign may be used as an alternate to the symbol sign.

Divided Highway, Black and White

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection…

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection or junction) where the opposing flows of traffic are separated by a median or other physical barrier. The word message DIVIDED HIGHWAY or DIVIDED ROAD sign may be used as an alternate to the symbol sign.

Divided Highway, Color

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection…

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection or junction) where the opposing flows of traffic are separated by a median or other physical barrier. The word message DIVIDED HIGHWAY or DIVIDED ROAD sign may be used as an alternate to the symbol sign.

Divided Highway, Outline

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection…

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection or junction) where the opposing flows of traffic are separated by a median or other physical barrier. The word message DIVIDED HIGHWAY or DIVIDED ROAD sign may be used as an alternate to the symbol sign.

Divided Highway, Silhouette

A Divided Highway symbol sign should be used on the approaches to a section of highway (not an intersection…

The Advance Traffic Control symbol signs includes the Stop Ahead sign. These signs shall be installed on an approach to a primary traffic control device that is not visible for a sufficient distance to permit the road user to respond to the device. The visibility criteria for a traffic control signal shall be based on having a continuous view of at least two signal faces for the distance specified.

Stop Ahead, Black and White

The Advance Traffic Control symbol signs includes the Stop Ahead sign. These signs shall be installed…

The Advance Traffic Control symbol signs includes the Stop Ahead sign. These signs shall be installed on an approach to a primary traffic control device that is not visible for a sufficient distance to permit the road user to respond to the device. The visibility criteria for a traffic control signal shall be based on having a continuous view of at least two signal faces for the distance specified.

Stop Ahead, Color

The Advance Traffic Control symbol signs includes the Stop Ahead sign. These signs shall be installed…

The Advance Traffic Control symbol signs includes the Stop Ahead sign. These signs shall be installed on an approach to a primary traffic control device that is not visible for a sufficient distance to permit the road user to respond to the device. The visibility criteria for a traffic control signal shall be based on having a continuous view of at least two signal faces for the distance specified.

Stop Ahead, Outline

The Advance Traffic Control symbol signs includes the Stop Ahead sign. These signs shall be installed…