The Minnesota Department of Transportation (MnDOT) in the US is upgrading its high-occupancy vehicle (HOV) express lane tolling equipment, in order to prepare itself for the interoperability requirements that would become effective from 1 October.

MnDOT is integrating the tolling equipment with new TransCore’s battery-free, eGo Plus sticker tags and eGo Plus switchable tags that are capable of switching from single to high-occupancy vehicle (HOV 2+) mode.

This new technology is replacing the ten-year old existing ASTMv6 radio frequency identification (RFID) toll tags.

MnDOT has also deployed the multi-protocol Encompass 6 readers, thereby replacing the older toll tag readers.

The new multi-protocol Encompass 6 reader is equipped to read a broader range of tags used in other regions in order to facilitate future interoperability.

"We are also exploring interoperability with airports and parking facilities in the region."

Expected to be installed later this year, the new tolling equipment will be seen supporting Interstates 35E, 394 and 35W.

TransCore’s Encompass 6 Multiprotocol Reader is a high-speed, multiprotocol 915MHz RFID reader that combines RF transceiver board and processor in a single assembly.

The MnPASS high-occupancy toll (HOT) and HOV transportation system are managed and operated by MnDOT.

The MnPASS technology enables drivers to travel comfortably on highways without congestion, even at peak traffic hours.

This helps save travel times, improves highway capacity, and provides faster and consistent public bus services.

MnDOT policy and planning and MnPASS programme director Brad Larsen was quoted by Traffic Technology Today as saying: "Whether driving alone or with passengers, more motorists can take advantage of the MnPASS Express Lanes during peak drive times.

"We are also exploring interoperability with airports and parking facilities in the region."