The key to merging with highway traffic safely is to match the speed of the cars already travelling on the highway. If you do have to slow down, remember it is very unsafe to come to a full stop on the ramp. The cars behind you are speeding up to merge on to the highway. If you come to a dead stop, they could crash into you, and might even push you into the path of highway traffic.
If there is construction on the road, for instance, you may see signs indicating a lower speed and you’ll need slow down.
Breaking the speed limit is both dangerous and illegal - if other cars are moving faster than the limit, stay in the right lane and keep out of their way.
Sometimes you’ll find highways have more than 3 lanes - it is good to stay in the right-most lane. Stay clear of the middle and left-most lane unless you’re passing slower traffic.
While in the right lane, watch for cars trying to merge onto the highway and give them enough space to make the move.
No matter how careful you are there’s no accounting for the behaviour of others. Even though highways are statistically safer, with cars moving at such high speeds if something does go wrong, it’s could cause a serious crash.
Be aware at all times. Check your mirrors and your blind spot regularly and avoid any kind of distraction from passengers, your mobile phone or the radio.
Road signs are put in specific places to ensure that the drivers are safe. They tell you the speed, where to turn, if there is any other important things happening on the roads, etc. If drivers don't pay attention to road signs it can cause a serious crash.