UKM thresholds allow passengers to safely enter railway cars without interfering with the operation of the door system.

Where freezing conditions exist, self-regulating or constant wattage heaters can be installed using exclusive designs from R.T.R Technologies®. Originally designed for contact rail applications, the self-regulating heater automatically heats the threshold to the proper ice melting temperature. When the substrate temperature rises above the nominal freezing point, the self-regulating technology reduces the voltage and heat output, eliminating wasted energy and the need for a control thermostat.

UKM thresholds are cast in various grades of aluminum and iron, using the UKM plasma spray method or incorporating anti-skid silicon oxide grits mechanically bonded to the top surface, to insure a slip-resistant tread area.

Thresholds can also be designed as stainless steel fabrications or aluminum extrusions and plasma sprayed using UKM process 0058.

All thresholds designed by UKM can be tested for slip resistance in accordance with ASTM F2048-00 “Standard Practice for Reporting Slip Resistance Test Results” using the English XL Variable Incidence Tribometer© per ASTM F1679.

Life cycle test programs, under various environmental conditions, can also be arranged to measure the longevity and anticipated replacement cost for car door thresholds.

Heated door guides can also be installed in series with self-regulated threshold heaters to keep the entire door pocket and assembly free of ice using one self- controlled system, eliminating the need for separate control thermostats.