Driving safety guide · Ford of Peoria · Peoria, IL
How to Merge onto a Highway in Illinois
Merging onto an interstate is about matching the speed of traffic and finding a safe gap. Here is a step-by-step approach, then what the Illinois Vehicle Code says about merging lanes, signaling, changing lanes and stopping or backing up on an expressway.
The short answer
Use the on-ramp to get up to the speed of traffic, check your mirrors and look over your shoulder, signal, and move into a gap without forcing other drivers to brake. Illinois law says that at an intersection where lanes are provided for merging, drivers on both roads must adjust their speed and position to avoid a collision.
How to merge onto a highway, step by step
| Step | What to do |
|---|---|
| 1. Look early | As you start up the ramp, glance at the highway to see how fast traffic is moving and where the gaps are. |
| 2. Build speed on the ramp | Use the ramp and the acceleration lane, if there is one, to get close to the speed of traffic before you move over. |
| 3. Signal | Turn on your signal so highway drivers can see you plan to move into their lane. |
| 4. Check mirrors and blind spot | Check your mirrors, then look over your shoulder for a vehicle in your blind spot. |
| 5. Pick a gap and move over | Adjust your speed to fit into a gap, move over smoothly and turn off your signal. Leave a safe following distance once you are in the lane. |
Drivers already on the highway can help by moving left when it is safe or adjusting their speed so merging traffic can fit in.
This section is our own driving advice, not statute text.
What Illinois law says about merging
Merging lanes
At an intersection where lanes are provided for merging traffic, the driver of each vehicle on the converging roadways must adjust speed and lateral position to avoid a collision with another vehicle (11-905).
Changing lanes
On a road divided into two or more marked lanes, you must stay as nearly as practicable within one lane and not move from it until you have first made sure the move can be made with safety (11-709).
Signaling
A signal to change lanes or move right or left must be given continuously for at least the last 100 feet in a business or residence district and the last 200 feet outside one (11-804).
Yield signs
At a yield sign, slow to a speed reasonable for conditions, stop if needed for safety, and yield to any vehicle in the intersection or approaching so closely on the other roadway as to be an immediate hazard (11-904).
From the Illinois Vehicle Code, 625 ILCS 5/11-709, 11-804, 11-904 and 11-905, Illinois General Assembly website, read November 9, 2026.
Illinois sets a 70 mph maximum for most vehicles on interstates outside urban districts unless another speed restriction applies, and no one may drive faster than is reasonable and proper for traffic conditions (11-601). Watch for posted limits on ramps and in work zones.
From the Illinois Vehicle Code, 625 ILCS 5/11-601, Illinois General Assembly website, read November 9, 2026.
What not to do on the expressway or shoulder
| Rule | What the law says |
|---|---|
| No backing up | You may not back up on any shoulder or roadway of a controlled-access highway. |
| No stopping | You may not stop, stand or park on any controlled-access highway, except to avoid conflict with other traffic or when the law, a police officer or a traffic-control device directs you to. |
From the Illinois Vehicle Code, 625 ILCS 5/11-1303 and 11-1402, Illinois General Assembly website, read November 9, 2026.
If you miss your exit, go on to the next one. See our guide to merge and lane ends signs for what the yellow merge and added-lane signs on ramps mean.
Keep your vehicle ready for the road
The Works® at Ford of Peoria 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. Ford of Peoria is at 2211 W. Pioneer Pkwy. in Peoria. Get directions.
Ford of Peoria service hours
| Days | Hours |
|---|---|
| Mon-Fri | 7 a.m.-5:30 p.m. |
| Sat | 8 a.m.-noon |
| Sun | closed |
From Ford of Peoria's website, November 9, 2026. Holiday hours can differ.
Merging onto a highway FAQ
Who has the right of way when merging onto a highway in Illinois?
Illinois law says that at an intersection where traffic lanes are provided for merging, the driver of each vehicle on the converging roadways must adjust speed and lateral position to avoid a collision (625 ILCS 5/11-905). Where a yield sign controls the ramp, Illinois's yield-sign rule requires yielding to vehicles approaching so closely as to be an immediate hazard (11-904).
How fast should I go when merging onto the interstate?
In our experience, aim to be close to the speed of highway traffic by the end of the ramp so you can fit into a gap smoothly. Never exceed a speed that is reasonable for conditions or the posted limit.
How far ahead do I need to signal before merging or changing lanes?
Illinois law requires the signal to be given continuously for at least the last 100 feet in a business or residence district and at least the last 200 feet outside one (625 ILCS 5/11-804).
Can I stop at the end of an on-ramp?
In our experience, only if a yield sign or traffic requires it for safety. On the highway itself, stopping on a controlled-access highway is prohibited except when needed to avoid conflict with other traffic or when the law, a police officer or a traffic-control device directs it (625 ILCS 5/11-1303). Where a yield sign controls the ramp, slow down and, if required for safety, stop and yield (11-904).
Can I back up on the highway if I miss my exit?
No. Illinois law says the driver of a vehicle shall not back upon any shoulder or roadway of any controlled-access highway (625 ILCS 5/11-1402). Continue to the next exit.
What does The Works at Ford of Peoria include?
The Works® at Ford of Peoria 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 Ford of Peoria.
Sources
Merging, signaling, lane, speed, stopping and backing rules are from the Illinois Vehicle Code (625 ILCS 5/11-601, 11-709, 11-804, 11-904, 11-905, 11-1303 and 11-1402) on the Illinois General Assembly website, read November 9, 2026. The step-by-step method is our own advice. Laws change; this page is a plain-language summary, not legal advice. Service details, address and hours are from Ford of Peoria's own website, checked the same day. Photo is illustrative.
- Illinois Vehicle Code, 625 ILCS 5, Chapter 11 (Sections 11-601, 11-709, 11-804, 11-904, 11-905, 11-1303 and 11-1402), Illinois General Assembly, read November 9, 2026
- General service: The Works, Ford of Peoria, November 9, 2026
- Address and service hours (structured data), Ford of Peoria, November 9, 2026