Transportation rates rose again in June as capacity across the sector tightened further, according to data from a monthly survey of supply chain professionals.

The Logistics Managers’ Index—a diffusion index in which a reading above 50 indicates expansion, while one below 50 signals contraction—returned a 92.4 reading for transportation prices in June. That was only 3.6 percentage points off the record pace set in May.

Transportation capacity (30.8) declined 90 basis points during the month, while transportation utilization (74.7) increased 5.2 points. Transportation capacity has declined in seven consecutive months.

Utilization accelerated throughout the month, increasing from 69.2 in the first half to 78.8 in the back half—an eight-year high. Public truckload carriers have focused on improving utilization through better load planning and freight selection in recent quarters.

Truckload fleets appearing at an investor conference last month said stricter regulatory enforcement has resulted in a material drawdown in supply. The group noted that routing guides are crumbling. Contractual rates set earlier in the year aren’t holding and many shippers are being forced to reprice some or all of their books.

Logistics managers surveyed expect the transportation market to remain very tight over the next 12 months, returning future readings of 42.4 for capacity, 75.8 for utilization and 87 for pricing.

Read more: FreightWaves