Warning, School and Guide Signs

Key points

1. Diamond signs warn of special conditions or hazards; be ready to slow down or stop.

   Source: Handbook p. 46

   “These signs warn you of special conditions or hazards ahead. Drive with caution and be ready to slow down or stop.”
   Connecticut Driver's Manual, Handbook p. 46

2. A pentagon (5 sided) sign marks school zones and school crossings.

   Source: Handbook p. 46

   “The pentagon (five-sided) shape marks school zones and warns you about school crossings.”
   Connecticut Driver's Manual, Handbook p. 46

3. A pennant sign on the left side of a two lane road marks the start of a no passing zone.

   Source: Handbook p. 46

   “When used, the sign is on the left side of a two-lane, two­-way roadway. It is posted at the beginning of a NO-PASSING ZONE”
   Connecticut Driver's Manual, Handbook p. 46

4. A round sign means you are approaching a railroad crossing.

   Source: Handbook p. 46

   “A circular sign indicates that you are approaching a railroad crossing. Slow down, look and listen for trains.”
   Connecticut Driver's Manual, Handbook p. 46

5. At a merge sign, drivers in both lanes are responsible for merging smoothly.

   Source: Handbook p. 49

   “Two lanes of traffic are about to become one. Drivers in both lanes are responsible for merging smoothly.”
   Connecticut Driver's Manual, Handbook p. 49

6. A two way roadway sign means you are leaving a divided road for a two way highway.

   Source: Handbook p. 49

   “This sign tells you that you are leaving a divided roadway and will be driving on a two-way highway.”
   Connecticut Driver's Manual, Handbook p. 49

7. Green signs are guide signs; they tell you where you are, which way to go and the distance.

   Source: Handbook p. 47

   “Green is used for guide signs. They tell you where you are, which way to go and the distance.”
   Connecticut Driver's Manual, Handbook p. 47

8. Blue service signs show rest areas, gas stations, campgrounds and hospitals.

   Source: Handbook p. 51

   “They show the loca­tions of various services, such as rest areas, gas stations, campgrounds, or hospitals.”
   Connecticut Driver's Manual, Handbook p. 51

Numbers to know

Recognize these signs

3 questions from the Connecticut practice test

1. 1. What do warning signs tell drivers?

   1. That a destination's distance is being shown
   2. That a parking space is legally reserved
   3. That the road is always one-way
   4. That a special situation or hazard is ahead
   Show answer

   That a special situation or hazard is ahead. Warning signs alert drivers to a special situation or hazard ahead and tell them to slow down and be prepared to stop if needed. They do not by themselves create a parking reservation, establish one-way travel, or serve as distance-only guide signs. Connecticut says these signs are usually yellow with black lettering or symbols and are often diamond-shaped. The cue is to change attention and speed when the sign appears, then be ready for the curve, crossing, signal, work area, or other condition it previews.

2. 2. What road situation is identified by a five-sided pentagon sign?

   
   1. A school zone or school crossing
   2. A hospital entrance
   3. A recreational park entrance
   4. A pedestrian bridge only
   Show answer

   A school zone or school crossing. The five-sided pentagon marks school zones and warns about school crossings. Children may be crossing or playing nearby, so slow down, watch carefully, and be ready to stop. A separate downward arrow plaque can identify the actual crosswalk location. The shape does not indicate a hospital, park, or pedestrian bridge. Scan both sides of the road for children and obey any crossing guard or signal that controls movement.

3. 3. What is the usual purpose of a green highway guide sign?

   1. To direct you to roads, distances, and specific exits
   2. To warn about a slippery pavement condition
   3. To prohibit a U-turn
   4. To identify a medical service
   Show answer

   To direct you to roads, distances, and specific exits. Green guide signs help drivers navigate. They can identify where you are, which way to go, the distance to a destination, and specific exits. They do not carry the general warning function of yellow signs, the prohibition function of a red slash, or the service function of blue signs. Read the wording early enough to choose the proper lane and exit without a last-second movement. The green background is a navigation cue: use it to plan direction and distance, not to interpret a hazard or command.

Source: the Connecticut Driver's Manual, Know the Road: Traffic Signs. This lesson is a plain English summary, not the law itself; where it differs, the manual and the statute govern. Last checked 2026-09-27.