Innovative road signs that can autonomously display the speed limit in cases where the
traffic situation requires it are under development. The autonomous road sign contains many …

A method of detecting and counting road vehicles using an acoustic sensor placed by the
road is presented. The sensor measures sound intensity in two directions: parallel and …

The present work reports on the novel implementation of a miniaturized receiver for
underwater networking merging a Piezoelectric Micromachined Ultrasonic Transducer …

Constant monitoring of road traffic is important part of modern smart city systems. The
proposed method estimates average speed of road vehicles in the observation period, using …

An approach to a new kind of recommendation system design that suggests safe speed on
the road is presented. Real data obtained on roads were used for the simulations. As part of …

This paper presents a new approach to detecting the presence of water on a road surface,
employing an acoustic vector sensor. The proposed method is based on sound intensity …

Accurate bearing‐time recordings play a crucial role in hydroacoustic target motion analysis
and situation estimation. The target bearing estimated by vector hydrophone in the …

This paper presents a strategy called the alternating iterative minimization method (AIMM),
aimed at enhancing the precision of direction of arrival (DOA) estimation when utilizing an …

Accurate direction of arrival (DoA) estimation is paramount in various fields, from
surveillance and security to spatial audio processing. This work introduces an innovative …

The objective of this paper is to present a practical project of intelligent road signs, under
which a series of new products for the regulation of traffic is being created. The engineering …