Driving safety guide · Michigan City Ford · Michigan City, IN
Hospital and Blue Service Signs Explained
Blue road signs point you to services: hospitals, gas, food, lodging, rest areas and more. Here is what the H sign and the other blue service signs mean, based on the federal Manual on Uniform Traffic Control Devices (MUTCD).

The short answer
The blue sign with a white H is the Hospital sign (D9-2). It guides you to a hospital, and the MUTCD allows it only for facilities that operate 24 hours a day, 7 days a week. Most blue signs are service signs: they point to road-user services such as gas, food, lodging, phones, rest areas and tourist information.
The Hospital (H) sign (D9-2)
The Hospital sign is a white letter H on a blue square. It is one of the General Service signs in the MUTCD, the federal standard for signs, signals and markings. Its standard size is 24 by 24 inches on conventional roads and 30 by 30 inches on freeways and expressways.
Who can use it: the Hospital sign, and the HOSPITAL (D9-13aP) word plaque, are limited to facilities that operate 24 hours per day, 7 days per week. For freeway and expressway service signs, the MUTCD suggests that State criteria consider whether a hospital has continuous emergency care capability with a physician on duty 24 hours a day, 7 days a week. That can mean a physician in the emergency department, or a registered nurse in the emergency department with a physician on call.
Arrows: when a service sign is used at an intersection, it must come with a directional message. Blue Advance Turn (M5 series) or Directional Arrow (M6 series) plaques with white arrows may be mounted under the H to show which way to turn.
Our advice: an H sign points to a hospital, but in a medical emergency, call 911 rather than driving yourself.
From the Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1, Sections 2I.01, 2I.02 and 2I.03, Table 2I-1 and Figure 2I-1, read November 9, 2026.
Emergency medical signs and plaques
The Emergency Medical Services (D9-13) symbol sign may be used for facilities that provide emergency medical care but do not operate full time. Under the MUTCD it may not be used for anything other than qualified hospitals, ambulance stations and qualified free-standing emergency medical treatment centers, and it must be paired with a plaque that names the type of service:
| Plaque | Legend | What it identifies |
|---|---|---|
| D9-13aP | HOSPITAL | A hospital (limited to facilities open 24/7) |
| D9-13bP | AMBULANCE STATION | An ambulance station |
| D9-13cP | EMERGENCY MEDICAL CARE | Only qualified free-standing emergency medical treatment centers |
| D9-13dP | TRAUMA CENTER | A trauma center |
The MUTCD suggests each State write its own policy for these signs. Its suggested hospital guidelines include 24-hour service 7 days a week, an emergency department with a physician (or an emergency care nurse with a physician on call), State licensing for definitive medical care, and radio voice communications with ambulances and other hospitals.
From the Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1, Section 2I.02, Figure 2I-1, read November 9, 2026.
Why service signs are blue
The MUTCD gives each sign color a general meaning. Blue means road-user services guidance, tourist information and evacuation routes. That is why every General Service sign and supplemental panel has a white legend and border on a blue background. Rest Area signs are blue too.
On ordinary roads, gas, food and lodging are usually within sight and easy to find, so the MUTCD says special service signs usually are not needed. In urban areas, General Service signing is usually not needed except for hospitals, law enforcement assistance, tourist information centers and camping. Where services are infrequent and found only on a crossroad, service signs may be used. States that choose to sign services should set a statewide policy for when to use them.
For green, brown and the other sign colors, see our guide to road sign shapes and colors.
From the Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1, Sections 1D.05, 2I.02 and 2I.05, read November 9, 2026.
Common blue service symbols
Service signs can use symbols or words, but symbols and words may not be mixed on the same sign. These are some of the General Service signs in the MUTCD:
| Sign | Name | What it tells you |
|---|---|---|
| D9-1 | Telephone | A telephone is available. |
| D9-2 | Hospital | A hospital that operates 24 hours a day, 7 days a week. |
| D9-3 | Camping | A campground. |
| D9-6 | International Symbol of Accessibility | Paved ramps and restrooms accessible to persons with disabilities; a VAN ACCESSIBLE plaque should be added where van-accessible parking is available. |
| D9-7 / D9-11 | Gas / Diesel Fuel | Fuel is available. |
| D9-8 | Food | Food service. |
| D9-9 | Lodging | A place to stay. |
| D9-10 | Tourist Information (INFO) | A tourist information center. |
| D9-11b | Electric Vehicle Charging | DC fast chargers in operation at least 16 hours a day, 7 days a week. |
| D9-12 | RV Sanitary Station | A dump station for recreational vehicle holding tanks. |
| D9-14 | Police | Law enforcement. |
| D9-16 | Truck Parking | Designated truck parking. |
| D9-20 + D9-20aP | Pharmacy (Rx) with 24 HR plaque | A pharmacy open 24/7 with a State-licensed pharmacist on duty, within 3 miles of an interchange on the Federal-aid system. |
Where the next place with services is far away (10 miles or more, under the conventional-road rule), a NEXT SERVICES plaque may be added below the service sign.
From the Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1, Sections 2I.02 and 2I.03, Table 2I-1 and Figure 2I-1, read November 9, 2026.
Service signs on freeways and expressways
On freeways and expressways, General Service signs (D9-18 series) are mounted between the Advance Guide sign and the Exit Direction sign, ahead of the exit that leads to the services. Where exits are numbered, the sign should include the exit number. These signs should only be used where you can get back on the freeway and continue in the same direction.
- Up to six services can be shown on one sign, and each service has a set spot on the sign.
- Word signs should read FOOD and PHONE on the top line and GAS and LODGING on the second; HOSPITAL, 24-HOUR PHARMACY and CAMPING go on separate lines.
- Symbol signs with six services should show GAS, FOOD and LODGING on the top row and PHONE, HOSPITAL and CAMPING on the bottom row.
- Ramp signs: if the services cannot be seen from the ramp of a single-exit interchange, smaller service signs with arrows are repeated where the ramp meets the crossroad.
- Seasonal services: signs for a service that runs only part of the year must be removed or covered while it is closed.
The MUTCD also suggests eligibility criteria for States to use. For example, fuel should be offered with vehicle services such as gas, oil and water, modern restrooms and drinking water and be open at least 16 hours a day, 7 days a week, and food service should be open to serve at least two meals a day, at least 6 days a week.
From the Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1, Section 2I.03, read November 9, 2026.
Rest area signs
Rest Area signs have a retroreflective white legend and border on a blue background. A sign that says REST AREA may only be used where parking and restroom facilities are available. A roadside area without restrooms should be signed for what it offers instead, such as PARKING AREA or PICNIC AREA (or ROADSIDE TABLE or ROADSIDE PARK). Scenic areas use legends such as SCENIC AREA, SCENIC VIEW or SCENIC OVERLOOK.
On freeways and expressways, a REST AREA advance sign should be placed 1 mile and/or 2 miles before the rest area, and a Rest Area Gore sign (D5-2a) is required at the exit gore. A NEXT REST AREA sign may give the location of the rest areas that follow.
From the Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1, Section 2I.05, read November 9, 2026.
911, 511 and other information signs
| Sign | Meaning |
|---|---|
| EMERGENCY CALL 911 (D12-4) | May be used where 911 can be reached by cell phone. |
| TRAVEL INFO CALL 511 (D12-5, D12-5a) | May be used where a 511 travel information service is available for traffic, public transportation, weather, construction or road condition information. White legend on blue. |
| Roadside Assistance (D12-6) | May be used along a highway served by an authorized roadside assistance program whose vehicles and staff provide roadside repair help free of charge. |
| Channel 9 Monitored (D12-3) | CB radio Channel 9 is monitored; only official public agencies or their designees may be shown as the monitoring agency. |
Our advice: if your vehicle breaks down, pull as far off the road as you safely can, turn on your hazard lights and stay alert to passing traffic while you call for help.
From the Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1, Sections 2I.10, 2I.11, 2I.12 and 2I.13, read November 9, 2026.
Paragraphs marked as our advice are our own guidance, not MUTCD text.
Keep your vehicle ready for the road
The Works® at Michigan City Ford includes a synthetic blend oil change, tire rotation and pressure check, brake inspection, Multi-Point Inspection, fluid top-off, battery test, and a filter, belts and hoses check.
Schedule service online and see our service specials first. Michigan City Ford is at 3930 Franklin St. in Michigan City. Get directions.
Michigan City Ford service hours
| Days | Hours |
|---|---|
| Mon-Fri | 7:30 a.m.-5:30 p.m. |
| Sat | 8 a.m.-3 p.m. |
| Sun | closed |
From Michigan City Ford's website, November 9, 2026. Holiday hours can differ.
Hospital and service signs FAQ
What does the blue H sign mean?
The white H on a blue square is the Hospital (D9-2) sign. It points the way to a hospital. The MUTCD limits the Hospital sign, and the HOSPITAL (D9-13aP) plaque, to facilities that operate 24 hours a day, 7 days a week.
Why are hospital and gas signs blue?
In the MUTCD color code, blue means road-user services guidance, tourist information and evacuation routes. All General Service signs, including Hospital, Gas, Food and Lodging, have a white legend and border on a blue background.
Does every hospital get an H sign?
No. Only facilities open 24 hours a day, 7 days a week may be signed with the Hospital sign. States that elect to provide this signing set their own policy, and for freeway signs the MUTCD recommends criteria such as continuous emergency care with a physician on duty around the clock.
What is the blue sign with a star-shaped symbol?
That is the Emergency Medical Services (D9-13) sign. It may be used only for qualified hospitals, ambulance stations and qualified free-standing emergency medical treatment centers, and it must have a plaque saying which one, such as HOSPITAL, AMBULANCE STATION, EMERGENCY MEDICAL CARE or TRAUMA CENTER.
What does a blue sign with Rx and 24 HR mean?
It is the Pharmacy (D9-20) sign with a 24 HR plaque. It may only be used for a pharmacy that is open with a State-licensed pharmacist on duty 24 hours a day, 7 days a week, located within 3 miles of an interchange on the Federal-aid system.
What is the difference between a REST AREA and a PARKING AREA sign?
A REST AREA sign is used only where parking and restroom facilities are available. A roadside area with no restrooms should be signed for what it offers instead, such as PARKING AREA, PICNIC AREA or SCENIC AREA.
How many services can a freeway service sign show?
No more than six general road user services can be shown on one sign, including any plaques added to it. Each service has a set spot on the sign, and a blank space can be left for a service that is not available yet.
What does The Works at Michigan City Ford include?
The Works® at Michigan City Ford includes a synthetic blend oil change, tire rotation and pressure check, brake inspection, Multi-Point Inspection, fluid top-off, battery test, and a filter, belts and hoses check.
Book a routine checkup
Book The Works, which includes a brake inspection, tire rotation and pressure check, and battery test, at Michigan City Ford.
Sources
Sign, color, placement and size details are from the Federal Highway Administration's Manual on Uniform Traffic Control Devices, 11th Edition with Revision 1 (Revision 1 dated December 2025), read November 9, 2026. This page is a plain-language summary of national standards, not legal advice; state law sets the rules of the road where you drive. Service details, address and hours are from Michigan City Ford's own website, checked the same day. Photo is illustrative.
- Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition with Revision 1 (Sections 1D.05, 2I.01, 2I.02, 2I.03, 2I.05, 2I.10, 2I.11, 2I.12 and 2I.13, Table 2I-1 and Figure 2I-1), Federal Highway Administration, Revision 1 dated December 2025 (PDF last modified March 4, 2026), read November 9, 2026
- General service: The Works, Michigan City Ford, November 9, 2026
- Address and service hours (structured data), Michigan City Ford, November 9, 2026