There is absolutely no sense in putting your freight, equipment and safety in jeopardy changing lanes to allow someone on the big road......ain't your job to let em on.....it's their job to git on.......that's why thay's yield signs.
Very, very few on-ramps have YIELD signs. Most are MERGE signs. Not that that matters a great deal in most cases, as traffic already on the road does have the legal right-of-way for both YIELD and MERGE. The problems come with the attitudes of some who think YIELD and MERGE mean the same thing. But there is a difference between YIELD and MERGE, where YIELD indicates the traffic already on the road has absolutely supremacy and doesn't need to consider one wit about traffic trying to get on. MERGE, on the other hand, implies a cooperative effort to combine, coalesce, amalgamate and become partners with each other in safe motoring.
While the already on-road traffic does have the right of way, so as not to cause traffic jams to the rear,
all drivers have a
responsibility to adjust their speed in order to allow gaps for merging traffic. Speeding up or slowing down to prevent someone from getting onto the highway will get you a ticket, as will not moving over to the left lane to let someone on
if doing so would prevent a traffic incident, like an accident, or some other potentially dangerous situation, despite you having the right of way. If drivers properly space their following distance, these adjustments will be minor and highly effectual to the smooth flow of traffic. If you are traveling in the right lane and you approach a freeway on ramp, you should be aware that other traffic may try to merge either in front of you or behind you. If you can, it is best to move out of the right lane to allow these vehicles easier entrance, or make those minor adjustments to your speed to allow a safe egress from the on ramp.
The above in an amalgamation, or merging, if you will, of my own opinions and experiences, and with the answers to some of the Frequently Asked Questions of the Departments of Motor Vehicles of California, Ohio, Michigan, Georgia, Texas and Kentucky.