Speed camera looking things at exits from IL rest areas

[Crazy Volvo Guy]

What's that about?  They look almost like a fixed speedcam but not quite, facing the re-entrance ramps when exiting rest areas.  ALPR, perhaps?

[SSOWorld]

ALPR?  What's that?

Probably making sure everyone signals as they enter the freeway.

[Scott5114]

It might just be a traffic counter. Have you seen if there's one on the ramp to the rest area as well? Maybe it's a system to make sure that cars don't overstay their welcome.

[The Premier]

ALPR?  What's that?

Automated License Plate Recognition

[3467]

I have seen them on the truck weighstations here in Illinois. I always assumed they had something to do with the trucks
I am sure they are not speed cameras.

[mgk920]

I have seen them on the truck weighstations here in Illinois. I always assumed they had something to do with the trucks
I am sure they are not speed cameras.

The ones by truck scales are used as part of the PrePass™ system.

Mike

[burgess87]

On my Buffalo < > Austin roadtrip in January, I saw the PrePass mast arms and I'm like "What the deuce are these things?"  So I looked it up online, thought it was pretty cool, and made some PrePass setups for SimCity.  No picture right now, but there will be one later.

[Truvelo]

The ones by truck scales are used as part of the PrePass™ system.

Mike

Are those the ones with signs saying something like "Truckers follow in cab instructions"?

[mgk920]

The ones by truck scales are used as part of the PrePass™ system.

Mike

Are those the ones with signs saying something like "Truckers follow in cab instructions"?

Yes.  The PrePass system includes receiver boxes for the cabs of big-rig trucks/lorries.

PrePass even advertises on some overnight radio shows that are popular with OTR drivers.  They have a jingle based on the theme to the TV show Rawhide.

Mike

[Alps]

ALPR?  What's that?

Speaking!