The various autoroutes are operated by different companies. You may find some that accept magnetic strip cards, others may not.
The US appears to be headed for wide adoption of chip and signature cards, those with a chip but no PIN. Some of the chip and signature cards have PINs which are used in unattended locations such as ticket kiosks or pay-at-the-pump fuel stations. Holders of these types of credit cards may find that their chip and signature cards work well on many autoroutes by entering the PIN but this may not be the case on all autoroutes.
I have a PenFed Visa card that is chip and signature but the PIN has always been accept at unattended locations. I have heard that the Andrews FCU chip and signature card also is issued with a backup PIN that is widely accepted. You can always try a credit card toll lane on the autoroute but if you run into problems, those behind you may be blocked and other than completely pleased that you have barred their passage.
Paying in cash always works and there is always at least one lane that will accept cash payment.